STU Types

Dominant STU File Type

.STU

File Format:	.stu
Class:	Pinnacle Studio Project

An STU file is a project file created by the video creation and editing program Pinnacle Studio. It stores all project information, including video, audio, effects, and timelines. STU files are used to save and load video projects.

Company:	Avid Technology
Division:	Data Files
Location:	HKEY_CLASSES_ROOT\.stu

Software Programs That Open The Pinnacle Studio Project:

Pinnacle Studio by Corel

Windows

Additional STU Files

.STU

File Format:	.stu
Class:	XyALGEBRA File

An STU file is a data file associated with the math software xyALGEBRA. It is likely a format used to save one of its support files.

Company:	John C. Miller
Division:	Data Files

Software Programs That Open XyALGEBRA File Files:

xyAlgebra by John C. Miller

Compatible with:

Windows

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Sources of STU Problems

Frequent STU Opening Issues

Pinnacle Studio Disappeared

You encounter an error message such as "%%os%% Can't Open STU Files" when trying to open your STU. If so, it typically means that you don't have Pinnacle Studio installed for %%os%%. The OS won't know what to do with your STU file, so double-clicking to load the file doesn't work.

Tip: If you have another software that you know opens STU files, you can select it by hitting the "Show Apps" button.

Pinnacle Studio is Out-of-Date

Your Pinnacle Studio Project file is incompatible with Pinnacle Studio because you might have the wrong version installed. Download the latest Pinnacle Studio version from the Corel website to ensure you have the correct one installed. This issue mainly occurs when your Pinnacle Studio Project file was created by a newer version of Pinnacle Studio than you have on your PC.

Tip: Sometimes you can get a clue about the version of STU file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Ultimately, most of the difficulties opening STU files are due to having the wrong version of Pinnacle Studio installed.

More Causes of Problems Opening STUs

Although you might already have Pinnacle Studio or another STU-associated software installed on your computer, you can still encounter problems opening Pinnacle Studio Project files. If you are still having problems opening STU files, there may be other issues that are preventing you from opening these files. Other contributing causes:

• File references in the Windows Registry for STU are wrong
• Corruption of the STU file description inside the Registry
• Corrupt install of Pinnacle Studio or other STU-related program
• STU file corruption
• STU file integrity has been compromised by malware
• Hardware related to STUs has device driver corruption
• Windows has inadequate resources to open your Pinnacle Studio Project file