wpmu-dev updates causing 502 when access wp-admin

I just had to delete wpmu-dev updates plugin as it was causing 502 when trying to access wp-admin.
Is there any know issue?

this is from our error log -
[Thu Jan 21 10:27:15.604308 2016] [:error] [pid 26357] [client 88.15.106.5:19826] WPMU DEV error: Upgrade failed - project not installed, referer: http://kaosschool.salonguru.net/wp-admin/post.php?post=58&action=edit
[Thu Jan 21 10:27:15.604338 2016] [:error] [pid 26357] [client 88.15.106.5:19826] [WPMU DEV Dashboard Info] Project Auto-Upgrade result for 119: Failed..., referer: http://kaosschool.salonguru.net/wp-admin/post.php?post=58&action=edit

The error log is full of the same 2 messages.