Do you possibly use a Windows operating system an the Mozilla Firefox Browser?
The QHIDDLL problem does occur incase the wrong file during the installing process through Firefox was chosen or rather the VitaDock software was linked to a wrong file. Because this error is stored by the browser even a new installing process won't bring any success.
This error can only be solved through Firefox:
- Please start your Firefox browser
- Go to the point "Applikation"
- Search for VitaDock®
- In the right line you can change the settings: Choose "VitaDockpc (standard)"
The described steps can also be comprehended with this video.