use this serial for install: SC11DEADHCBEEF-COCA-COLA 1. create a folder C:\Flexlm and put our license.dat inside. 2. install mathcad as non server ( cd based installation USING license file). 3 immediatly after the installation, choose license file path when prompted. 4. install all 3 sp's from sps/ 5. apply our patcher to the installed directory set LM_LICENSE_FILE env. variable if required