Graphics Card causing problems with DOS Program

[moveit]

I have a couple of old Dos based programs, one being Cardboxplus which is a database that is quick and easy to use.
Last week I updated my motherboard. All the Dos based programs worked fine. Yesterday I updated my graphics card and all but Cardboxplus worked. When I start it the front screen comes up normal with the version and copyright. I then press the space bar to get into the database. It comes up saying the program has performed an illegal operation.
I have tried it in safe mode and followed the trouble shooting in 98 but still no joy. I can only think it has to do with the graphics card but I cannot understand why the other Dos software works especially as this one uses very little memory and is capable of working from a floppy drive. Any help would be very welcome as all my data is in this program.

 

[moveit]

I have tried re-installing but no good. I updated the motherboard so as to have more hard drives. After this the screen often hung up with no picture, just multi-colored lines or distorted picture. Going to GeForce 4 card stopped this.
I have contacted several card suppliers explaining the problem but they could not guarantee another make would sort out it out. Some stated that as the chips were made in the Far East by a couple of manufacturers, and the cards re-badged, it was doubtful another make would do the trick. I could buy another make but then I could end up with video cards I cannot use.