Hi Thorsten, a complete restart of the apache server has fixed the issue. I would suggest to add a "service restart" in the post-install script, because I've found many sites with this error message via google.
- Bug#798866: (no subject) Andreas Schwarz
- Bug#798866: [php-maint] Bug#798866: (no subject) Ondřej Surý
- Bug#798866: [php-maint] Bug#798866: (no subject... Thorsten Alteholz
- Bug#798866: [php-maint] Bug#798866: (no sub... Andreas Schwarz