Thanks, Vadim.
Yes, I restored the ENV after applying the latest SPs. But, I am still getting the same error.
My backup copy was backed up using BW 7.30 or BW 7.31... I am not sure about it. But, I am now trying restore into BW 7.31.
Is it possible that my backup was backed up using using non UNICODE box? My restore box is a UNICODE box.
Another strange error is ... In the Excel add in, I went to the Data Manager tab and then clicked the Transformation File then clicked New menu. At this point, I got the new transformation file with lots of garbage characters. This is another problem I am facing.
Thanks,
Peri