Installation Of Plugin (All Plugins) Failed

[gcom]

Hi,
I tried to install revive on my brand new server (wheezy,  Apache/2.2.22 (Debian), PHP Version 5.4.4-14+deb7u7) but I always run into the same error: At step 3 an error message says:

Your Revive Adserver installation is complete. Please check the highlighted issues.
An error occurred when performing installation tasks. Please check the error list and install log at '/var/www/www.cleanenergy-project.de/htdocs/asv/var/install.log' for details. You will still be able to login to your Revive Adserver instance.

    Detailed list of errors found
        Installation of plugin 'openXVideoAds' failed:
            Server returned: 0
        Installation of plugin 'openXDeliveryLog' failed:
            Server returned: 0
        Installation of plugin 'openXInvocationTags' failed:
            Server returned: 0
        Installation of plugin 'openXMaxMindGeoIP' failed:
            Server returned: 0
        Installation of plugin 'openXDeliveryCacheStore' failed:
            Server returned: 0
        Installation of plugin 'openXReports' failed:
            Server returned: 0
        Installation of plugin 'openX3rdPartyServers' failed:
            Server returned: 0
        Installation of plugin 'openXDeliveryLimitations' failed:
            Server returned: 0
        Installation of plugin 'openXBannerTypes' failed:
            Server returned: 0

Click "Continue" to login to your Revive Adserver instance.

What does "Server returned: 0" mean?

What kind of error is this and how can I find out, what the problem is? My logfiles show no errors at all

[gcom]

OK, I guess reading helps: Upgraded to php 5.5 and everything seems to work fine.