Thank you for contacting Presonus Technical Support. Sorry to hear about the recent issues you have been experiencing.
Reset the Studio One settings to address the issue:
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Go to Help>Open Settings folder.
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Copy the contents of the folder over to a folder on your desktop.
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Close S1 and delete the contents of the settings folder with the exception of the user.license file as well as the "Extensions" folder.
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Open S1 and go to Studio One>Options (Preferences on a Mac) to reconfigure your settings.
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Test to see if the problem is resolved. If it is not, please feel free to copy your settings files back over from the backup that you created in step 2.
*If you are missing presets or Sound Sets after doing this, simply double-click one of your Sound Sets under Documents>Studio One>Sound Sets.
If the issue remains, please create a ticket to technical support.
Here is a link to create a ticket: http://support.presonus.com/hc/en-us/requests/new
