tilecache: internal server error caused by wrong libgpng version

tilecache gets:

An error occurred: HTTP Error 500: Internal Server Error

mapserver gets:

Internal Server Error

apache error logs says:

[Tue Nov 06 16:18:33.751389 2012] [cgi:error] [pid 10394] [client 192.168.1.145:53345] AH01215: libpng warning: Application was compiled with png.h from libpng-1.5.12
[Tue Nov 06 16:18:33.751490 2012] [cgi:error] [pid 10394] [client 192.168.1.145:53345] AH01215: libpng warning: Application  is  running with png.c from libpng-1.2.46
[Tue Nov 06 16:18:33.751533 2012] [cgi:error] [pid 10394] [client 192.168.1.145:53345] AH01215: gd-png:  fatal libpng error: Incompatible libpng version in application and library
[Tue Nov 06 16:18:33.754515 2012] [cgi:error] [pid 10394] [client 192.168.1.145:53345] End of script output before headers: mapserv

reinstall mapserver with libpng-1.2