OK, sorry to hear that.
I have just had successful fix which you might care to try:
My computer is an Acer which has somthing called "Acer eData Security" installed by default. I removed this program and now I can use TurboCad - no problems!
I have seen other threads in which this security program is also causing crashes with applications other than TC, so it seems to be a bit of a nuisance. I don't know what this program is supposed to do but in any case I am running McAfee security so I am covered for risks on the web/e-mail etc.
Hope this helps,
cadman99
