Wing FTP Software

Hello.
I have tried to uppgrade wftpserver from 4.4.1 to 4.5.6 Linux 64 bit on Ubuntu 14.04.1.
Everything runs ok, version and licens looks ok too. But I can not change any config from webb GUI. No system settings, not add users or group, not change password or IP-filters. When i click ok it looks normal but when i go back into config the last change is gone.
I got no messages about it in any log or in GUI. I have tried on both our servers with same result.
When i go back in revision to 4.4.1 it works ok again.
Is there any known bug or any new library needed? I am stucked.

/Andreas

No, there is no such issue in the latest version 4.5.6, you can test it again.

OK.
I have tried several times now.
Even fresh install (no upgrade).
I guess i have to go for 4.4.1 and wait for next revision then...

/Andreas

OK, I think such issue was caused by the Linux system mostly, because some Linux will not release the port quickly after stopping the WingFTP service, so you just need to wait for a few minutes, and BTW, the new version 4.5.8 is out now, you can upgrade to it first.