I’m having the same problem with the nextgen plugin conflicting with jetpack
1) Cannot manage galleries/albums/tag options in nextgen, ALSO get in a continual browser LOOP in both IE11 and Edge. The NEXTGEN ‘manage’ menus are UNUSABLE. Problem is resolved when deactivating JETPACK, but then when NEXTGEN activated and working cannot reinstall or activate JETPACK, A very vicious circle – this is the case even if these two plugins are the ONLY two plugins active on my site.
ALSO:
2) Cannot update jetpack v6.0 settings while nextgen 2.2.54 is activated
3) Cannot activate jetpack while nextgen is activated – verification secrets not found
4) Cannot post by email while nextgen is activated – images not saved to media library AND post goes into DRAFT.
Been having a nightmare with this..
I upgraded to WP 4.9.5- updatd to the latest versions of all my plugins AND had these problems on php 5.6 and have now also updated to php 7.1 – and still have all the problems listed above!
I also had a problem with the visual editor with NEXTGEN (while jetpack was activated) where the editor had no menu options and typing was ‘invisible’ but installing the plugin ‘visual editor fix for NGG’ resolved this…
There are obvioiusly serious compatiblily issues between NEXTGEN and JETPACK, If anyone can help with problems 1-4 above I would be delighted