Solution 1

If you have the same Xilog/XilogPlus of the machine installed on the PC:

1. from the first/main window of Aspan you can execute the command "Utility -> Technical menu -> Modify Preferences", select the "Configuration" tab
   - search the "XisoExePath" parameter and set its value as the path where is possible to find the "WinXiso.exe" file in the Xilog/XilogPlus installation (usually "C:\Programs\Scm Group\Xilog Plus\Bin");
2. Search the option "Xilog.UseWinXiso" and verify that its value is set to 1;
3. Confirm with the "Ok" button and restart the program.

N.B. If the registry keys listed above should not be found, you must add them using the appropriate button "Add".

Solution 2 

If you don't have the Xilog/XilogPlus installed on the PARTNER/ASPAN PC:

1. from the first/main window of PARTNER/ASPAN you can execute the command "Utility -> Technical menu -> Modify Preferences", select the "Configuration" tab;
2. search the "Xilog.UseWinXiso" parameter and check that its value is 1;
3. copy from the machine PC the WinXiso.exe file and put it in the PARTNER/ASPAN installation folder overwriting the existing one
4. start the program and try to create a program, probably some errors will appear concerning some missing DLLs:

You need to copy each one of them and retry the program generation.