Steps to Reproduce

1. Open saved connection, where SSL=Server and Client validation is used (I tried x509)
2. Upload malformed certificate (or just random file) as Client Certificate or Client Private Key. Keep the rest fields filled in with correct data
3. Click Connect

Expected Results

There is en error message that connection cannot be established. 

Actual Results

Compass window is whitened out, and nothing can be done there.

Additional Notes

If upload malformed certificate as Certificate Authority, keep the rest data correct and Connect  - connection is established. Is the data from this file used at all?