Steps to Reproduce
1) Go to Admin CP -> Styles & Templates -> Download / Upload Styles -> Import Style XML File.
2) Select a style file at the "EITHER upload the XML file from your computer" option.
3) At the Merge Into Style option, select Create New Style under the Mobile Styles label.
4) Click Upload.
Observed Result
In the Rebuild Style Information page, a DB error is showed. After this, any page of the Style Manager shows that same DB error.
Expected Result
DB error should not occur.