since about 3-4 Days i have Moneydance crashing on Windows as well as soon as i create a new posting and move to the category field (either through tabbing or clicking). I was about to create a new discussion for this since reinstalling did not solve it and on my Mac it is not happening. By any chance is it the same behaviour for you as well?
I remember a memory size allocation problem on windows computers from some time back, worth a try.
Navigate to C:\ Program Files \ Moneydance \ Moneydance.vmoptions
Open this file in a text edit.
Enter a # in front of the line -Xmx1024m
Remove the # in front of the line -Xmx2048m
Close the file and save the changes.
Try opening Moneydance.