I see posts describing problems with updating to new versions of i-MSCP, so I decided to post I have updated to 1.3.8 with no issues what so ever. Nice, easy and seamless. No errors at all. It is pretty simple and straight forward. It is a must to read errata data prior to beginning update to see if anything special is needed before and sometimes after update is completed.
I run apt-get and update my system. I disable all my plugins, stop imscp_panel and run update. Easy as pie IMHO ...
Keep up the great work ...