If you have a UNC network path for your documents and SC crashes, try this fix

[jinkerz7]

Problem:
I am using Screenshot Captor 2.57.01 on Windows Vista SP2.  My IT department just moved my "Documents" folder to a UNC network path (e.g. \\computer\path\subfolder).  This caused Screenshot Captor to crash whenever I tried to start it.  It displayed a blank error dialog box and then closed.

Solution:
I edited the ConfigDir.ini file and set the CONFIGDIR value equal to the . directory (e.g. CONFIGDIR = .) to tell it to save all configuration files in the program directory.  I restarted Screenshot Captor and everything worked!