I am trying to import a ProE created STP or STEP file of a solid model into 2012. STP does not seem to be an option under format types. AutoCAD Mechanical 2012 seems to import the file just fine and it looks and act like a solid. I saved the file out in dwg format. When I try to import the dwg file into Inventor or just open it, a "styles conflict" dialog box comes up even though the dwg file being imported and the ipt file being used are the standard versions that come with the programs. If I click OK an idw file opens displaying a blank sheet. Then Inventor acts like it is done with the task.
Inventor should import the STEP format just fine. In the Open dialog, choose the drop-down beside the "Files of Type". Select either "All Files", or "STEP Files"
Kirk
Inventor 2012 and AutoCAD Mechanical 2012 support the same STEP application protocols (AP214 and AP203E2).
As Kirk said, Inventor should be able to import the file directly. Please go to the 'ribbon > Tools > Add-Ins' and click on the 'Translators' tab. Ensure the add-in "Translator: STEP" is listed there.