The problem is obviously at your end so it's no use blaming the software.
You should probably try to troubleshoot this yourself - update the drivers for your graphics card, update Windows, update your version of Signlab, clean up your registry (CCleaner is good for this) ...that should help for a start.
Well, thanks for the critique but I would have to say the diagnosis is incorrect. I've been using Signlab for about 6 years now, and it's been a continuous thing. I haven't always used it on this computer, these computers here are less than 6 months old, but the same thing happened at my previous job on every computer, and we had signlab on about 8 computers there.
It's a problem with Signlab. Draw a textbox, start typing, and program will error and close. It will continue to do this until you load the .bak file, then everything will go smooth.
Just cost me a lot of time, just got done doing a design on magnetics (15 minutes, but still) that time could have been used for multiple other things - simple text layout.
Ah, and all tech support does is send me in circles and have me load the .bak file and hey, that fixes the problem..until next time. This isn't a problem this week, it's been a problem for years.
I can design a 70mb file in Photoshop with no problem, yet simple text in Signlab, and it crashes.