When using OCR functionality within a Umango product you may experience the following error:
The remote procedure call failed. (Exception from HRESULT 0x800706BE)
This error occurs when the ABBYY OCR engine is not licensed and activated. This may be caused by the licensing server being unavailable when activating Umango.
To correct this issue and manually activate the ABBYY engine, you will need to contact Umango support.
Link to this article http://umango.com/KB?article=71