Hello ugenyp,
Does this happen even if you activate the options to open the Bing Maps and Google Earth Engine in the Tools->Properties like so :
![alt text][1]
If this does not work, can you try switching between Firefox to Chrome ( or the other way)? YOu way)?
You can do this in hte the same panel of Tools->Properties
Also post the contents of the log file (you can find them in the Collect earth Window. Main menu Help->Open Application Log File ( you can select the text and use the key combination Control+C to copy it )
Hope this helps you!
[1]: http://www.openforis.org/support/upfiles/zoomIntoWIndows.png