[agb2]

To try and pinpoint the problem, I cloned my installation to a fresh partition and renamed .kodi.
I then set the LE config to manually update from the Milhouse LE9 repo. and updated to #427.
I created 2 test profiles, added some media and tried logging on/switching profiles.
With all profiles using Estuary, this works fine.
I then installed Confluence and the common cache addon.
Profile test1 uses Confluence, Master and test2 use Estuary.

Switching to test1 crashed Kodi.
Crashlog here - http://ix.io/18Vp

Thread 1 (Thread 0x6cefc380 (LWP 1924)):
#0 0x00a6a3dc in CPythonInvoker::execute(std:tring const&, std::vector<std:tring, std::allocator<std:tring> > const&) ()
Hope this helps to identify the problem.
I will keep my main installation on #421 and test newer builds in the test installation.

I should add that this is all on a tweaked NOOBS setup, with several Kodi installations, each with their own 16GB partition on a 128GB SSD.
I will make one change to the test installation, as I noticed in the crashlog that it had become the 'master browser', which I do not want.

Thanks, yes - looks to be Python related. @peak3d any ideas?  

Circumstantial evidence would suggest that among the criteria for attempting to reuse a python addon/invoker/thread etc. should be whether
the skin has changed.