An issue with MediaBay has occurred following the content update

Cubase
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1

After performing a content update for HALion Sonic 7 (approx. 1.4 GB) the other day, I began experiencing several issues in MediaBay.

HALion Sonic Common Presets Content
HALion Sonic Content
HALion Sonic Factory Content
Studio Kit

The folders listed above (and others) appear greyed out, and their contents are not displayed.
It is unclear whether these folders were originally present.

Folders for content I do not own a license for are also visible in MediaBay; they too appear greyed out and are empty.

Additionally, selecting a “Drum Kit SE” track preset in MediaBay causes an error, and in some cases, causes Cubase to crash completely.

Has anyone else experienced MediaBay malfunctions following the recent content update?

It seems to resemble issues encountered with previous content updates, though I cannot say for certain.

I have tried reinstalling MediaBay and rebuilding the database, but there was no change.
I also tried deleting and reinstalling the content (such as HALion) via the Library Manager, but that didn’t help either.

I have attached the dump files generated during the errors for reference.

This is the dump data generated when Cubase crashed after operating MediaBay.

Cubase 15.0.30 64bit2026.10.1 0.06.51.291.dmp (905.4 KB)

Dump data of an error that occurred during content updates.

2026.9.30 21.47.58.626.dmp (233.0 KB)

Windows 10 / Cubase Pro 15

2

After that, when I initialized the “ContentManager.xml” file in the Application Data folder (by renaming it and restarting the program), the unlicensed packages disappeared, and the Media Bay returned to its previous display of the VST Sound folder.

However, an error still appears when previewing Groove Agent SE presets.
Since the same error appears in “Cubase 15 in its completely default state,” as well as in “Cubase 14” and “Cubase 13,” it is likely a Media Bay issue.

(Alternatively, it could be an issue with Groove Agent SE itself, though it functions perfectly normally as a plugin.)

Is anyone else experiencing this error when selecting (previewing) Groove Agent SE presets in the Media Bay?