[Serusers] Installation problem

Hi, I had ser-0.8-11 on linux 8.0. I downloaded the 0.8.12 version. When i run the rpm pakage i get the following error: file /usr/lib/ser/modules/*.so from install of ser-0.8.12-0 conflicts with file from package ser-0.8.11-0. I had deleted all the ser-0.8.11-0 files before i did this installation. Where is this error coming from? Also, i want to work with the dbtext module which needs that i work with the source module only but when i do a rpm -i the installation is done. What is the way around this? The command ./ser -f ser.cfg comes up with errors, where can i view these errors? Any pointers will be of great help. Thanks, Annie