Last Update: 10/19/2015
This issue started since Windows Vista and on and not unique to Origin. Usually the message is There is a problem sending the command to the program. It only happens on some PCs and we don't have a fix for this yet. Try the following suggestions and see if one of them will help.
Specify the default application to use when open the opj file again
Clear DDE settings in Registry
Make Sure Compatiblity Settings of the Origin exe file was not changed.
Again for Origin 9.0 and 9.1 users, if your OS is 64 bit and you chose to install both 32 bit and 64 bit.do this for both exe files (Origin9.exe and Origin9_64.exe).
If you have two versions of Origin on the same PC, e.g. both Origin 9.0 and Origin 7.5 (Windows Vista, 7, 8, 8.1 or 10). If double clicking opj launches Origin 7.5 instead of Origin 9.0, you can try the following:
Keywords:installation, OPJ, startup