Offline mission editor not working (AH version 2.26)?

[Midway]

For current version (2.26) I get a windows error when trying to use it.  I have Windows7 64bit.  

[HOG02]

For current version (2.26) I get a windows error when trying to use it.  I have Windows7 64bit.  

I  just came here because I get the same thing,crash or all I can see is one field Icon as soon as I try to save Mission group properties.
Any one have any ideas? I have windows xp service pack3.
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[bbosen]

Version 2.26 is working for me, in the same way and to the same degree that others have worked. It does crash when I try to edit some of my old mission (the most complex ones), but I've been able to recompile several of my simpler ones. Windows XP, 32 bits, Service Pack 3.
 

[100Coogn]

Mine crashes even trying to create a new mission.

Coogan

[Mato]

Doesn't work for me either