OSMC Triple boot issue

I have a Osmc triple boot installation with RetroPie and Debian on a sd card. The Osmc version doesn’t want to upgrade to Krypton with the following error :
An error occurred while installing the following package : multiarch-support (2.19-18+debu8u7).
Error log can be found at http://paste.osmc.io/avahifofoq

I do have a sd card with Osmc as a single os and that upgraded with no errors.
Any help appreciated.