Starting WAN Router...
Loading WAN drivers: wanpipe FATAL: Error inserting wanpipe (/lib/modules/2.6.18-92.1.22.el5/kernel/drivers/net/wan/wanpipe.ko): Unknown symbol in module, or unknown parameter (see dmesg)
Building modules, stage 2.
WARNING: could not find /usr/src/dahdi-linux-188.8.131.52/drivers/dahdi/vpmadt032_loader/.vpmadt032_x86_32.o.cmd for /usr/src/dahdi-linux-184.108.40.206/drivers/dahdi/vpmadt032_loader/vpmadt032_x86_32.o
I don't why, but I had the same problem with a A100P card.
On zaptel, I had already a problem with the IRQ.
I was in 1.3.2 so I had make update to 1.5.2, and i had the same problem like you.
I did make a fresh install to 1.5.2 version, and no problem with dahdi.
For you, I think that you must make a backup, and make a fresh install, and restoring your backup.