Hi sse,
I installed the newest version first. But i think where the problem is:
When i installed LS, i downloaded the microsoft framework 2.0 (was needed).
After installing LS everything work fine
In the afternoon when i started up windows there was a security patch available (framework sdk), after the install LS worked not more.
So i de-install the sdk, and installed it again, without security patch.
Now LS is working fine again...
Maybe LS need an upgrade??