Could not find plugin to load objects...

[Gladsomebeast]

Sounds like you still have the Vizard 2.5x bin folder in your Path environment variable. You need to remove that part of your Path environment variable.

To manually remove the Vizard 2.5x bin folder from your Path environment variable:
1. Right click on 'My Computer' icon and select properties
2. In the resulting 'System Properties' window select the Advanced tab
3. Click the Environment Variables button
4. Scroll down the 'System Variables' list till you see the Path variable
5. Click the edit button
6. Find the entry that corresponds to your Vizard 2.5x bin folder. Default is C:\Program Files\Vizard25\bin;
7. Remove this entry and press OK.

If you are using the OSG 3ds Max export plugin, then it will have to be reconfigured.