My pages with embedded pdf suddenly refuse to be displayed in Pale Moon. They are readable in 5 other browsers (IE11, Vivaldi, SeaMonkey, Safari, SWRiron) on the same computer .
Here is one of the pages : http://chauvigne.info/pages/227-auguste-corporations-de-touraine-fr.php
Here is a screen shot of the error message (in French)

It could be a config issue, but I haven't changed a thing and it was displaying perfectly the moment before. Can you help, please ?
Below is my PM config
Paramètres de base de l'application
-----------------------------------
Nom: Pale Moon
Version: 25.6.0
Agent utilisateur: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:25.6) Gecko/20150723 Firefox/31.9 PaleMoon/25.6.0
Extensions
----------
Nom: Adblock Latitude
Version: 3.0.2
Activée: true
ID: {016acf6d-e5c0-4768-9376-3763d1ad1978}
Nom: Add to Search Bar
Version: 2.5-pm
Activée: true
ID: {e178eb56-1085-4a1f-9376-3763d1ad1978}
Nom: au-revoir-utm
Version: 0.3.1.1-signed
Activée: true
ID: jid1-yRtlFKrTMBrAtQ@jetpack
Nom: Autofill Forms
Version: 1.0.4
Activée: true
ID: autofillForms@blueimp.net
Nom: BuiltWith
Version: 1.9.6.1-signed
Activée: true
ID: gary@builtwith.com
Nom: CodeBurner for Firebug
Version: 1.6.1-signed
Activée: true
ID: firebug@tools.sitepoint.com
Nom: Copy Pure Text
Version: 2.0.1.1-signed
Activée: true
ID: copy-pure-text@kashiif-gmail.com
Nom: CSSsir
Version: 1.0.20131207.1-signed
Activée: true
ID: {0103572f-d20f-4039-9eaa-ded7c4a97124}
Nom: Disconnect
Version: 3.15.3.1-signed
Activée: true
ID: 2.0@disconnect.me
Nom: Dust-Me Selectors
Version: 4.1.1-signed
Activée: true
ID: {3c6e1eed-a07e-4c80-9cf3-66ea0bf40b37}
Nom: EPUBReader
Version: 1.5.0.6.1-signed
Activée: true
ID: {5384767E-00D9-40E9-B72F-9CC39D655D6F}
Nom: Feedspot Notifier
Version: 1.0.1-signed
Activée: true
ID: team@feedspot.com
Nom: Firebug
Version: 1.12.8.1-signed
Activée: true
ID: firebug@software.joehewitt.com
Nom: FireFTP
Version: 2.0.19.1-signed
Activée: true
ID: {a7c6cf7f-112c-4500-a7ea-39801a327e5f}
Nom: Firesizer
Version: 1.7.1-signed
Activée: true
ID: {04426594-bce6-4705-b811-bcdba2fd9c7b}
Nom: Font Information
Version: 0.3.1.1-signed
Activée: true
ID: {70ded480-0a45-4099-84d1-65aa1cb1575e}
Nom: Fun Characters
Version: 1.0.1-signed
Activée: true
ID: funcharacters@diegoruiz.info
Nom: Gmelius
Version: 5.7.7.12.1-signed
Activée: true
ID: firefox@gmelius.com
Nom: Google Docs Viewer
Version: 1.8.9.1-signed
Activée: true
ID: adonis.cuhk@gmail.com
Nom: Google search link fix
Version: 1.4.9.1-signed
Activée: true
ID: jid0-XWJxt5VvCXkKzQK99PhZqAn7Xbg@jetpack
Nom: History Submenus Ⅱ
Version: 3.0.1.2.1-signed
Activée: true
ID: HistorySubmenus2@Merci.chao
Nom: Lazarus: Form Recovery
Version: 2.3.1-signed
Activée: true
ID: lazarus@interclue.com
Nom: Lightshot (screenshot tool)
Version: 4.6.8
Activée: true
ID: {394DCBA4-1F92-4f8e-8EC9-8D2CB90CB69B}
Nom: MeasureIt
Version: 0.4.14.1-signed
Activée: true
ID: {75CEEE46-9B64-46f8-94BF-54012DE155F0}
Nom: PageZipper
Version: 1.4.4.1-signed
Activée: true
ID: pagezipper@printwhatyoulike.com
Nom: Pale Moon Commander
Version: 1.7.1
Activée: true
ID: commander@palemoon.org
Nom: PDF Viewer
Version: 1.0.277.1-signed
Activée: true
ID: uriloader@pdf.js
Nom: phplangeditor
Version: 2.5.6
Activée: true
ID: {77e8295d-7048-8367-1c67-378537c06d74}
Nom: Rainbow
Version: 1.6.1-signed
Activée: true
ID: rainbow@colors.org
Nom: Resurrect Pages
Version: 2.0.6.1-signed
Activée: true
ID: {0c8fbd76-bdeb-4c52-9b24-d587ce7b9dc3}
Nom: RightToClick
Version: 2.9.5.1-signed
Activée: true
ID: {cd617375-6743-4ee8-bac4-fbf10f35729e}
Nom: Save Text Area
Version: 0.4.7.1-signed
Activée: true
ID: {8522e648-adce-469a-8c3a-18659a6ab6e3}
Nom: ScribeFire Next
Version: 4.3.1.1-signed
Activée: true
ID: next@scribefire.com
Nom: Unhide Passwords
Version: 1.2.7.0.1-signed
Activée: true
ID: {2e17e2b2-b8d4-4a67-8d7b-fafa6cc9d1d0}
Nom: Web Developer
Version: 1.2.5.1-signed
Activée: true
ID: {c45c406e-ab73-11d8-be73-000a95be3b12}
Nom: Web2PDF converter
Version: 1.12.1-signed
Activée: true
ID: {e8f509f0-b677-11de-8a39-0800200c9a66}
Nom: WOT
Version: 20150708
Activée: true
ID: {a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7}
Nom: YouTube ALL HTML5
Version: 2.1.3.1-signed
Activée: true
ID: jid1-qj0w91o64N7Eeg@jetpack
Nom: CSS Usage
Version: 0.3.4.1-signed
Activée: false
ID: csscoverage@spaghetticoder.org
Préférences modifiées importantes
---------------------------------
accessibility.typeaheadfind.flashBar: 0
browser.cache.check_doc_frequency: 1
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.disk.smart_size_cached_value: 307200
browser.cache.frecency_experiment: 3
browser.fixup.alternate.enabled: false
browser.newtab.url: about:newtab
browser.places.smartBookmarksVersion: 7
browser.search.useDBForOrder: true
browser.sessionstore.upgradeBackup.latestBuildID: 20150222232811
browser.startup.homepage: about:newtab
browser.startup.homepage_override.buildID: 20150723171034
browser.startup.homepage_override.mstone: 25.6.0
browser.tabs.insertRelatedAfterCurrent: true
browser.tabs.loadInBackground: false
browser.tabs.remote.autostart.1: false
browser.tabs.warnOnClose: false
browser.tabs.warnOnOpen: false
dom.allow_scripts_to_close_windows: true
dom.disable_open_during_load: false
dom.disable_window_flip: false
dom.disable_window_open_feature.close: true
dom.disable_window_open_feature.menubar: true
dom.disable_window_open_feature.minimizable: true
dom.disable_window_open_feature.toolbar: true
dom.mozApps.maxLocalId: 1001
dom.mozApps.used: true
extensions.lastAppVersion: 25.6.0
font.internaluseonly.changed: true
font.minimum-size.x-western: 10
font.name.monospace.x-western: DejaVu Sans Mono
font.name.sans-serif.x-western: Tahoma
font.name.serif.x-western: DejaVu Serif
font.size.fixed.x-western: 14
general.useragent.locale: fr
gfx.direct3d.last_used_feature_level_idx: 0
gfx.font_rendering.cleartype.always_use_for_content: true
javascript.options.strict: true
media.gmp-gmpopenh264.enabled: true
media.gmp-gmpopenh264.lastUpdate: 1423220148
media.gmp-gmpopenh264.version: 1.3
media.gmp-manager.lastCheck: 1425464856
network.cookie.alwaysAcceptSessionCookies: true
network.cookie.prefsMigrated: true
network.cookie.thirdparty.sessionOnly: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1438163123
places.history.expiration.transient_current_max_pages: 104858
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
plugin.state.flash: 2
plugin.state.np32dsw: 1
plugin.state.npctrl: 1
plugin.state.npdeployjava: 0
plugin.state.npezffpi: 0
plugin.state.npgeplugin: 1
plugin.state.npgoogleupdate: 1
plugin.state.nphardwaredetection: 1
plugin.state.nppdf: 2
plugin.state.np-previewer: 0
plugin.state.npqtplugin: 0
plugin.state.npsoplugin: 1
plugin.state.npvlc: 2
plugin.state.npwlpg: 1
print.printer_Adobe_PDF.print_bgcolor: true
print.printer_Adobe_PDF.print_bgimages: true
print.printer_Adobe_PDF.print_colorspace:
print.printer_Adobe_PDF.print_command:
print.printer_Adobe_PDF.print_downloadfonts: false
print.printer_Adobe_PDF.print_duplex: 1515870810
print.printer_Adobe_PDF.print_edge_bottom: 0
print.printer_Adobe_PDF.print_edge_left: 0
print.printer_Adobe_PDF.print_edge_right: 0
print.printer_Adobe_PDF.print_edge_top: 0
print.printer_Adobe_PDF.print_evenpages: true
print.printer_Adobe_PDF.print_footercenter:
print.printer_Adobe_PDF.print_footerleft:
print.printer_Adobe_PDF.print_footerright:
print.printer_Adobe_PDF.print_headercenter:
print.printer_Adobe_PDF.print_headerleft:
print.printer_Adobe_PDF.print_headerright: &PT
print.printer_Adobe_PDF.print_in_color: true
print.printer_Adobe_PDF.print_margin_bottom: 0.5
print.printer_Adobe_PDF.print_margin_left: 0.5
print.printer_Adobe_PDF.print_margin_right: 0.5
print.printer_Adobe_PDF.print_margin_top: 0.5
print.printer_Adobe_PDF.print_oddpages: true
print.printer_Adobe_PDF.print_orientation: 0
print.printer_Adobe_PDF.print_page_delay: 50
print.printer_Adobe_PDF.print_paper_data: 9
print.printer_Adobe_PDF.print_paper_height: 11,00
print.printer_Adobe_PDF.print_paper_name:
print.printer_Adobe_PDF.print_paper_size_type: 0
print.printer_Adobe_PDF.print_paper_size_unit: 1
print.printer_Adobe_PDF.print_paper_width: 8,50
print.printer_Adobe_PDF.print_plex_name:
print.printer_Adobe_PDF.print_resolution: 1515870810
print.printer_Adobe_PDF.print_resolution_name:
print.printer_Adobe_PDF.print_reversed: false
print.printer_Adobe_PDF.print_scaling: 1,00
print.printer_Adobe_PDF.print_shrink_to_fit: true
print.printer_Adobe_PDF.print_to_file: false
print.printer_Adobe_PDF.print_unwriteable_margin_bottom: 0
print.printer_Adobe_PDF.print_unwriteable_margin_left: 0
print.printer_Adobe_PDF.print_unwriteable_margin_right: 0
print.printer_Adobe_PDF.print_unwriteable_margin_top: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_bgcolor: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_bgimages: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_colorspace:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_command:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_downloadfonts: false
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_duplex: 1515870810
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_edge_bottom: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_edge_left: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_edge_right: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_edge_top: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_evenpages: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_footercenter:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_footerleft:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_footerright:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_headercenter:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_headerleft:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_headerright: &PT
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_in_color: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_margin_bottom: 0.5
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_margin_left: 0.5
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_margin_right: 0.5
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_margin_top: 0.5
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_oddpages: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_orientation: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_page_delay: 50
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_data: 9
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_height: 11,00
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_name:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_size_type: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_size_unit: 1
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_paper_width: 8,50
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_plex_name:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_resolution: 1515870810
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_resolution_name:
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_reversed: false
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_scaling: 1,00
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_shrink_to_fit: true
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_to_file: false
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_unwriteable_margin_bottom: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_unwriteable_margin_left: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_unwriteable_margin_right: 0
print.printer_Canon_MG3100_series_Printer_(Copie_1).print_unwriteable_margin_top: 0
privacy.cpd.cookies: false
privacy.cpd.downloads: false
privacy.cpd.formdata: false
privacy.cpd.history: false
privacy.cpd.sessions: false
privacy.donottrackheader.enabled: true
privacy.sanitize.migrateFx3Prefs: true
security.disable_button.openCertManager: false
security.enable_java: true
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1437327458
webgl.prefer-native-gl: true
Accélération graphique
----------------------
Date du pilote: 1-29-2014
Date du pilote (GPU #2): 3-14-2013
Description de la carte: Intel(R) HD Graphics 3000
Description de la carte (GPU #2): NVIDIA GeForce GT 540M
Direct2D activé: true
DirectWrite activé: true (6.2.9200.17292)
Fenêtres avec accélération graphique: 1/1 Direct3D 10
GPU #2 active: false
ID du périphérique: 0x0116
ID du périphérique (GPU #2): 0x0df4
ID du vendeur: 0x8086
ID du vendeur (GPU #2): 0x10de
Paramètres ClearType: Gamma: 2200 Pixel Structure: RGB ClearType Level: 0 Enhanced Contrast: 100
Pilote de la carte (GPU #2): nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Pilotes de la carte: igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32
RAM de la carte: Unknown
RAM de la carte (GPU #2): 1024
Version du pilote: 9.17.10.3347
Version du pilote (GPU #2): 9.18.13.1144
windowLayerManagerRemote: false
AzureCanvasBackend: direct2d
AzureContentBackend: direct2d
AzureFallbackCanvasBackend: cairo
JavaScript
----------
Ramasse-miettes incrémentiel: true
Accessibilité
-------------
Activée: false
Empêcher l'accessibilité: 1
Versions des bibliothèques
--------------------------
NSPR
Version minimale attendue: 4.10.8
Version utilisée: 4.10.8
NSS
Version minimale attendue: 3.19 Basic ECC
Version utilisée: 3.19 Basic ECC
NSSSMIME
Version minimale attendue: 3.19 Basic ECC
Version utilisée: 3.19 Basic ECC
NSSSSL
Version minimale attendue: 3.19 Basic ECC
Version utilisée: 3.19 Basic ECC
NSSUTIL
Version minimale attendue: 3.19
Version utilisée: 3.19

