I'm using WinXP Pro version 2002 sp3.  I've been trying to use MemoryFox, a really useful FF addon but it will only work on one of my two WinXP computers.  So I've downloaded MemoryFox Pro and tried to install it (from it's .exe file)...but it gives me this error message:

internal error: cannot expand "pf64" constant on this version of Windows.

Could someone explain what this means and if there is a known workaround.  Although it might seem the "64" could refer to a 64 bit edition of WinXP, it doesn't make sense that an addon would be limited in that way.

John

 

Iv'e never installed a firefox addon through a EXE file so i couldn't tell you.

It appears that you are correct about the 64-bit assumption from a quick Google search, though I cannot be certain since you said it worked on another computer.

@jbclem

I tested and installed the MemoryFox Next add-on from within Firefox, with no issues. Is there a reason you need the Pro version, they both appear to do the same thing.

https://addons.mozilla.org/en-US/firefox/addon/memory-fox-next/