I've been modifying the registry myself for years. Now think it may be escalated as a bug?
Save the following code as a *.reg file, and run it. The path to XnViewMP needs to be modified
Code: Select all
Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\Applications\xnviewmp.exe\shell\open\command] @="\"E:\\Program Files\\XnViewMP\\xnviewmp.exe\" \"%1\""
After you do this, you can set any file to open by XnViewMP, Includes rare formats such as DICOM.