Thanks for the Info with php.ini.... or PHP.
I dont use an Server just an Webhoster and set it from php5.5 to php7 did worked. Now 2.0 final works
Thanks
I already used Mantis Bug Tracker 2.0 Betas, RC1 and RC2. Since the release of the final Mantis Bug Tracker 2.0 i get the message Unsupported ADOdb Extension (v5.04) detected! Disable it to use ADOdb I dont know how to do this. It doesnt matter if i make an clean install or update my 2.0 RC2 ...