My v9.3.7 site was recently moved from home server to hosting provider. Everything seems ok except if I edit a content block, when I ask to save ‘ok’ I get a pop up which says ‘unable to find the specified page’
This happens on more than one instance of the block and on different pages.
I did all the migration checks suggested. e.g permissions etc. and test uploads and market place.
What can I check to resolve this?
So I removed the content block and layout, then recreated the layout and added the content block afresh. added content in stages trying save ‘OK’ at each step. The block saves except when the content is ‘aligned center’, remove center alignment and it saves again 
I can’t duplicate this in a fresh instance of 9.3.7. Are there any JavaScript errors reported? Right-click->Inspect->Console tab
Hi, Yes there was a 500 error on jquery.js during submit.
I posted the logs to the isp and they tweaked something on imunify360 which was causing the problem.
Thanks for the insight!
Glad to hear you got it fixed!