Compatibility with Events Calendar Pro

When I deactivate Mantra, my Events Calendar Pro works fine. When Mantra is enabled, which I want it to be all the time as my site doesn’t look right in Twenty Thirteen, I can’t get the calendar to change to the next page (in list view) or next month (in month view).

Another problem I have is with the wp-admin page. Every time I post something or log in, I get the white screen. If I go back to the home page I see all the dashboard information and usually my changes were made. Sometimes I can’t login so I have to disable Mantra in my cPanel by renaming the folder, but once I’m logged in, I can rename the file and enable Mantra again.

Also, when I go to Mantra settings and click on Export Theme Options, I get a page of code, so I can’t export my settings.

I think this was not a problem in the last version.