Just some feedback on my adventures with unMHT and MozArchiver. On my Pale Moon 26.1.1 (x86) MozArchiver is excellent of course,
the only thing is for my needs the "Save selection as MHT..." context menu function of unMHT is necessary for saving just the pertinent info off a page.
Using Ex Pea's adaptation here:
https://forum.palemoon.org/viewtopic.php?t=10852#p77963
And just for fun inserting Pale Moon's GUID into the install.rdf:
<em:targetApplication>
<!-- Pale Moon -->
<Description>
<em:id>{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}</em:id>
<em:minVersion>24.0</em:minVersion>
<em:maxVersion>27.0</em:maxVersion>
</Description>
</em:targetApplication>
All went well using the newest unMHT .xpi that works with PM 26.1.1:
https://addons.mozilla.org/en-US/firefox/addon/unmht/versions/?page=1#version-7.3.0.5.1-signed
The other techniques were in fact not necessary for me either and possibly not the PM GUID either.
Tried both unMHT and MozArchiver together, with one then the other and both will save and open .mht files sucessfully.
The .maff and .mht conversion to each other function of MozArchiver is very handy.
Using the PageZipper add-on you can load all pages of a post and save them in a single .mht or .maff.
For some of you who are understandably shy to experiment on a production machine, a possible solution to these necessary growing pains is to have multiple
profiles and run one as i.e. "standard" and others as test1, test2, etc. and just have some profile(s) committed to test add-ons, a profile strictly for saving pages,
one just for plugins you do not want to update, for security testing etc. Just make a PM shortcut somewhere and in the target box add a space then -p like:
"C:\Program Files (x86)\Pale Moon\palemoon.exe" -p
For Linux you can right click the desktop, choose:
Create Launcher > choose a Name: > Command: palemoon -p -no-remote
Under Permissions select: Allow this file to run as a program
Search for icon, try: /opt/palemoon/browser/icons/
When launching, unselect: Don't ask at startup
The ProfileSwitcher add-on will open any profile concurrently with another.
Hope this helps. PM 26.1.1 has really resolved many things now, Thanks MC and team.