[wix-users] Handling InvalidDataException in DetectComplete when parsing malformed BALConditions

[Jacques Eloff]

Hi

I've got a custom bootstrapper and processing BalCondition entries during
DetectComplete.

I noticed when there's a syntax error, I'm getting an InvalidDataException.
I'm able to log the exception (Engine.Evaluate is inside a try/catch), but
it appears that the engine terminates and I can't surface the exception in
the UI (my UI is only launched after DetectComplete).

[2484:695C][2019-05-14T22:57:04]e051: Error 0. Failed to parse condition
WixBundleInstalled OR (((VersionNT >= v6.1) OR (VersionNT64 >= 6.1)) AND
(ServicePackLevel >= 1)). Unexpected symbol at position (null)
[2484:695C][2019-05-14T22:57:04]i000: The data is invalid. (Exception from
HRESULT: 0x8007000D)
[2484:695C][2019-05-14T22:57:04]i199: Detect complete, result: 0x0
[2484:0F24][2019-05-14T22:57:04]i000: Initializing telemetry manager

The i000 entries are all from my custom BA.

Thanks,
Jacques