Slitherine

So within the last week I have purchased all of the series, I mean all of the Matrix games website Panzer Corp.
I can play pretty much everything but I cannot play any of the grand campaigns! when I go to load any year, I get a black map and black mini-map, and none of the menu buttons respond. I have to end task out of the game with windows. That's really the long and short of it -- all black map areas and non responsive games.
Please help!

update,
re-installing GC didn't help.

Considering all the other campaigns works fine this seems to be a problem with the GC installation. Did you deinstall GC first and then reinstalled it or did you just reinstall it again?

I personally think the best approach here would be to deinstall all the PC parts first and delete any potential leftover files in the installation folder. Don't worry this will preserve your settings and saved games as they are stored in your user folder and not in the installation folder. Then install everything again in the following order:
1. Panzer Corps: Wehrmacht
2. Panzer Corps: Afrika Korps
3. Panzer Corps: Allied Corps
4. The Grand Campaign Mega pack or the single DLCs in chronological order if you don't have the Mega Pack.
5. Apply patch 1.21.

I hope this solves the problem. If not we will have to have a deeper look at it but i hope this will be solve the problem.

I reisntalled my Allied Campaigns and everything seems to work fine. thanks

Glad to hear the everything is working now for you. Have fun with the game.