This is permission problem, is the user has the execute permission on the remote machine? Please try to use the credential of user who has administrator rights on remote m/c Regards, Sunil Tonger

If the COM wroks fine in Exe and not as a library then finger point to the marshalling problem, can you please check whether the library and the application loads in the same AppDomain Regards, Sunil Tonger

As suggested by Michael, the #import generate the wrapper classs for coclasses that are part of ATL dll, any COM DLL need to be registered before it use, and location of dll is irrelevent as it shourld be registed in the windows registry by using "regsvr32" command. if you don't want to use the #import you can directly create the instance of class by using CoCreateInstance but life is more tough without #import as you have to handle the AddRef and Release part of your own. Regards, Sunil Tonger

Dear Siva, Is that is happening in debugh mode or it happens in release build also? I also face the same problem while debugging the application :( but it works fine in release build. Regards, Sunil Tonger

:)The Tiff file consist of tags and to insert the scan line the 256 and 257 tag should be added to tiff file which denotes the acutal scanline width and hight, and other tags attributes should be filled appropriately. Its better to insert these tags and scan line data at end, if it is inserted in between then we end up shifting the details of each tag by that offset I hope this will help in finding the right solutions.:) Regards Sunil Tonger