I am experiencing similar issues with AutoCAD 2013. The security problem occurs the first time I access the program after a reinstall. After another boot, the program suddenly closes itself while loading; this repeats indefinitely unless I reinstall the product, and then the cycle begins again. If it is relevant, can you clarify exactly how to change the neccesary permissions and location of the license files? It would also be helpful if you are familiar with the program closing itself.
Awesome!!! it worked!! i found the "flexnet" folder placed in on the desktop and all Autodesk software worked like nothing had ever happened. Wow, that was wild..thx.
Ps. using Windows 7
I tried this deleting the "above" files but go to start The "cad" program and it just shuts off. having said that all my other programs with the suite still work.
So I just cant use the AutoCad 2013 and have no place to put a serial number.
Any other Ideas?