Can’t access the editing page for frontpage with Pagebuilderplugin activated

Hello,

i can’t edit my frontpage while the pagebuilderplugin is activated. First I didn’t recieved any error messages, just a blank page after clicking on “edit” in the “all-page overview” of wordpress (4.5.1). After de- and activating of some of the Plugins i noticed that without the pagebuilderplugin the editing page will show properly, an now i got those “Fatal error: Allowed memory size of 67108864 bytes exhausted” messages.

So first I thought that it is a storage problem and deletet a few plugins and files – and now i have the blank page again.

Does anyone of you know how to solve this?

Btw, i’m using the Theme Sydney and the page itself shows proberly – just the editing mode fails on just this site – all the others are working proberly too.

Thank you for your help,

Micha