The number of bugs in this program is unbelievable. After using it for 6 months, I have spent hundreds of hours fixing problems due to software bugs or restarting the program after it crashes. Im running it on a new computer with XP, a faster processor and far more memory than the minimum that the vendor requires. The print functions do not all work. For example, one function allows you to print a cut-out of your design, which you can then cut with scissors, fold, and tape together. That would be great...however only 3 of 4 walls will ever print. I have never therefore been able to use this function. Even more frustrating is the bug that does not actually save your work even if you have saved prior to shutdown. I have re-drawn the same features 4 times in one plan, simply because the program will not save the changes, or it will only save some of the changes.
Also, the hardware key (dongle) takes up one of my USB ports and only works if I reboot my computer after inserting it. Even then, sometimes I have to remove and replace it multiple times.
I wish I could recommend an alternative.