The numerical displays for shrapnel on poison wind mortars and plagueclaw catapults seems to be very far off. When you apply the upgrade it will list your damage as being over a thousand, however the actual damage doesn't seem to be improved by nearly that much. In addition, for whatever reason the plagueclaw catapult lists its range as 85 when you do that, despite still having its full range. The only other mod I have just adds doomwheel/flayer mounts for warlock engineers, so don't think there's any sort of mod conflict involved here.

The unit upgrade doesn’t work in the current game version
If u hover over the unit a orange cross appears but if u try to click On it, no menu shows up for warpfule upgrades

All other mods are deactivated, so it’s no conflict