I have got the Gem version SP3. I have resinstalled it, so it has been easy to delete it.
The installing of SP4 has been performed without any issues.

Thanks to all for your cooperation.

HI twesthues
Thank you for your fast answer.
I have a main issue to apply your solution. I don't find the EPO disk where Gem 4.2.0 SP3 is present.

Bad luck !

Hi, I got a PC with an old EPO install. As I wanted to install a recent one, I was required to uninstall GemSafe libraries 4.2.0 SP3. But I failed to do that. First, I tryed to unsinstall with add/remove program. Then, the result was a crash. The screen of the machine became black ! Second, I have d...