<p>We've been using Vista with Office 2007 for the last 18 months and haven't had any issues like this.</p>
<p>However problems with OpenLP's control of PPT have been fixed by others in the past using the Office Repair tool. Would you mind doing the following (from the Microsoft knowledge base) to see if it fixes it?</p>
Click Start, and then click Control Panel.
Do the following:
Click Programs, and then click Uninstall a Program.
Click the name of the Microsoft Office <var>Edition</var> 2007 you want to change, and then click Change.
Click Repair, and then click Continue.
Note In Classic view on Windows Vista, double-click Programs and Features. Click the name of the Microsoft Office <var>Edition</var> 2007 you want to change, and then click Change. Click Repair, and then click Continue.