Update V1.4 has killed my current version of Draftsight. Error 1320 path too long during installation.

I am using Windows 7. I tried to install the latest version of Draftsight and the procedure stopped before completion with a path too long error 1320. I now have no Draftsight and no way to reload it. Same error every time I try. it wiped out my previous installation. Please help me if you can.

Thanks.

Jack