Index was outside the bounds of the array

Hi folks,

I installed a new installation of AO 2.0 on my laptop and I a getting the following error message when trying to insert a datasource.

I am expecting to see the logon to BW dialog prior to insertion of an existing (and working with 1.4 datasource).

I tried all, even deinstall and reinstall AO 2 a second time.

******Log File content*******

FILE_TYPE:DAAA96DE-B0FB-4c6e-AF7B-A445F5BF9BE2

RECORD_SEPARATOR:35

COLUMN_SEPARATOR:124

COLUMNS:Time|Severity|Category|Method|Thread|Text

SEVERITY_MAP:DEBUG|Debug|INFO|Information|VERBOSE|Verbose|WARNING|Warning|ERROR|Error|FATAL|Fatal

HEADER_END

2015-04-22 13:51:46,362|ERROR|Log.AoPlugin|?.?|VSTA_Main|Exception happened: Index was outside the bounds of the array.#

*********END OF LOG *************

ANy help is appreciated