Quest SQL Optimizer for Oracle doesn't start (4333152)

Getting the error  below when trying to  start Quest SQL Optimizer for Oracle:

"Eventlog:
.NET Runtime 2.0 Error Reporting
Bucket 407276713, bucket table 5, EventType clr20r3, P1 quest sql optimizer for oracle, P2 7.4.1.834, P3 491d032a, P4 quest sql optimizer for oracle, P5 7.4.1.834, P6 491d032a, P7 1dd, P8 0, P9 system.typeinitialization, P10 NIL.

EventType clr20r3, P1 quest sql optimizer for oracle, P2 7.4.1.834, P3 491d0379, P4 quest sql optimizer for oracle, P5 7.4.1.834, P6 491d0379, P7 1dd, P8 0, P9 system.typeinitialization, P10 NIL."

The OS is Vista 64bit Windows.

WORKAROUND:
None

STATUS:
Waiting for fix in a future release of Quest SQL Optimizer for Oracle.