I will need some extra information from you so we can gain a better understanding of the issue.
Please follow these steps:
1. Find the Event Viewer program in Windows (Programs > Administrative Tools > Event Viewer).
2. Start MMI and try to export a PDF to generate the error.
3. Open the Event Viewer.
4. On the left-hand tree, under 'Window logs,' select 'Application.'
5. Find the record of the error (under MMI or, if not there, under Microsoft .NET)
6. Send us a screenshot of both the 'General' and the 'Details' views.
This will help us analyze the issue.
I appreciate your cooperation.