The oartconv.dll file is a conversion module that belongs to the 2007 Microsoft Office system from Microsoft Corporation. The module allows the conversion of SmartArt objects in Office programs.
An error with the oartconv dynamic link library file will mean that you have problems attempting to convert SmartArt objects. To fix this issue you may need to reinstall Microsoft Office. Before doing that, though, try to clean your computer’s registry.
The registry is a database that Windows uses to find and run files installed on your system. When you clean your registry, you go through the database and check every entry for accuracy. When you find a mistake, you correct it.
The problem is that the registry has thousands of entries, and going through it manually is a difficult task to say the least. Let ZookaWare PC Cleaner clean your registry for you. ZookaWare PC Cleaner is guaranteed to find and fix every error in your registry. Try ZookaWare PC Cleaner when you have a dll file error. and get your registry clean again.