Hello, we don't have the versions we call 5.11 or 5.12. Maybe you meant 5.511. 0 224 Call our Bursa office on 220 67 17 and we will assist you."momet":1dugxlq7" said:Friends, I lost the cd of ideCAD architecture 5.11, I installed 5.12 on the pc, but the lock gave an error. I'm waiting for your help.