Seems like it's better to use ->machine_name instead of ->name as part of temporary path to create subtheme archive due to error is being caused by usage of spaces and other symbols in sub-theme name.

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StatusFileSize
new1.02 KB

Patch attached.

Status:Needs review» Reviewed & tested by the community
StatusFileSize
new897 bytes

This is definitely a valuable fix, it's much safer to use the machine_name vs the "anything goes" real name.

This patch is just rerolled to use the correct directory structure, the change is 100% from cr0ss.