Short answer: No
Slightly longer answer:
- SuperRepo collects and distributes addons without modifications.
- The collector gives higher priority to packages coming from ‘official’ (third party) XBMC repositories, with the real official XBMC repository on top.
- On the software side XBMC will always install from whatever repo provides the highest version number of the specified addon.
- As SuperRepo automatically checks addons and their dependencies, the chances of breaking something is ultra-low.
So no, it is not dangerous to use SuperRepo (along with already installed repositories)
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