Updrade to Sarge problem with apache und libpache-mob-php4

["Pierre B." <apache@linux-age.com>]

hello,
i got a problem during to upgrade to Sarge with apache (1) and the module 
libapache-mod-php4. I always get the error:

Setting up libapache-mod-php4 (4.3.10-15) ...
Error: mod_webapp.so does not have a corresponding .info file.

what can i do to fix this problem?

thanks a lots for some help.
Pierre 

log file:
Errors were encountered while processing:
 fetchmail
 libapache-mod-php4
 php4
E: Sub-process /usr/bin/dpkg returned an error code (1)
Ack!  Something bad happened while installing packages.  Trying to recover:
Setting up fetchmail (6.2.5-12) ...
Starting mail retrieval agent: fetchmail (failed).
dpkg: error processing fetchmail (--configure):
 subprocess post-installation script returned error exit status 1
Setting up libapache-mod-php4 (4.3.10-15) ...
Error: mod_webapp.so does not have a corresponding .info file.
The above errors might cause apache to not work properly or start
Please refer to the documentation on how to fix it or report it to
Debian Apache Mailing List <debian-apache@lists.debian.org> if in doubt
on how to proceed
dpkg: error processing libapache-mod-php4 (--configure):
 subprocess post-installation script returned error exit status 128
dpkg: dependency problems prevent configuration of php4:
 php4 depends on libapache-mod-php4 (>= 4:4.3.10-15) | libapache2-mod-php4 (>= 
4:4.3.10-15); however:
  Package libapache-mod-php4 is not configured yet.
  Package libapache2-mod-php4 is not installed.
dpkg: error processing php4 (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 fetchmail
 libapache-mod-php4
 php4