.52 Plugin is kept even if it's corrupted

[Saga Musix]

Full Version:
OpenMPT v1.17.02.52

Has the bug occured in previous versions? If yes, please specify version(s): (This option is optional, and doesn't need research. But in case you know...)
not tested

Description of the bug:
This VSTi (link removed; note to self: it's the Juno6 VSTi) seems to be kinda corrupted. I get an error message when adding it and afterwards, it's not shown in the VST manager. However, it's kept in the VST list! So everytime I start MPT, I get a warning (until I remove it from the mptrack.ini myself...)

Edit: Moved to the issue tracker: http://bugs.openmpt.org/view.php?id=18