LINQPad 2.45.05 refuses to open the LinqConnect driver

[lc4pro]

Trying LINQPad for the first time.
LINQPad complains that the LinqConnectDriver.dll is not in the "Documents and Settings\...\LINQPad" folder or else, that is built for a newer version of the runtime.
In fact, the dll is there. So, what is going wrong?
TIA

[MariiaI]

LINQPad 2.45.05 is not supported. Please upgrade your LINQPad up to 4.48.01 and try your scenario again.

[lc4pro]

Than you!
I'm tied to .NET 3.5...