I‘ve compiled and install an application called gpass on CentOS v5.6. But, when I run the application it does not accept any password from $HOME/.gpass and displays the following error on screen:

libglade-WARNING **: could not find signal handler ‘gpass_authentication_on_response’

How do I fix this problem and use the gpass software?

You need to pass -Wl and–export-dynamic when compiling gpass application. Type the following commands:
$ cd /path/gpass/src/dir
$ make clean
$ export LDFLAGS='-export-dynamic'
$ ./configure
$ make
# make install
Now you can have your passwords back and working.