Hi,
Sorry it took me so long to get back here...
So, live_site is set to empty, I have no JS compression plug-ins (I did try that in the past and got trouble with it so I didn't keep it, I checked to make sure and it's not there anymore), however I do have a jQuery loader plugin - I had some jQuery conflicts after moving. I tried disabling it to make sure, there's no difference (I'm talking about the admin buttons here, I can live without the name field on the registration form I haven't tried to put it back yet - those buttons are my main problem as every time I need to change a member's subscription I must do it manually in the database).
I tried completely re-installing CB, CBSubs and all the CB plug-ins I need, but renaming the "comprofiler" folder - in case it hadn't been properly restored. No luck. Even without installing CBSubs, those buttons don't work, actually.
On a side note, I moved to another server with the same host as PHP 5.3 has some security issues plus Akeeba Backup wouldn't work with it, I now have PHP 5.5. I built another website from scratch for another project on that server, also using CB (but not CBSubs), and it's working just fine.
Thanks.
Seb.