V3d_View Dump/ToPixMap failing on glMakeCurrent

Hi,

my current project uses Qt for GUI purposes and integrates OpenCASCADE. However, I am unable to dump the front buffer of my V3d_View into a pixmap (using ToPixMap) or directly store them to disk using the Dump-method. I am able to reproduce the issue when running the AndroidQt sample and trying to call myView->Dump() after loading a shape inside the ReadShapeFromFile method. Here's the code:

bool AndroidQt::ReadShapeFromFile (QString theFilePath)
{
    //
    // Sample code left out.
    //

    //Image_AlienPixMap img;
    //if (myView->ToPixMap(img, 1024, 1024))
    //    return img.Save("C:\\test.bmp");

    return myView->Dump("C:\\test.bmp");
}

Here is whats logged after calling ToPixMap (either from Dump or my code):

TKOpenGl.WinSystem | Type: Error | ID: 170 | Severity: High | Message:
  wglMakeCurrent() has failed. The requested resource is in use.

Warning, on screen buffer is used for image dump - content might be invalid
TKOpenGl.WinSystem | Type: Error | ID: 170 | Severity: High | Message:
  wglMakeCurrent() has failed. The requested resource is in use.

TKOpenGl.WinSystem | Type: Error | ID: 170 | Severity: High | Message:
  wglMakeCurrent() has failed. The requested resource is in use.

TKOpenGl.WinSystem | Type: Error | ID: 6 | Severity: High | Message:
  wglMakeCurrent() has failed. Invalid handle.

Any ideas whats going on here?

Thanks in advance!