cannot run on Redhat AS2.1

Can anybody please advise me how to get out of the following problem. I have just now installed the Tamino I am not able to run (I am not using the apache and Java distributed with the Tamino cd). The error message is as follows:

/usr/sag/common/bin/regutil: error while loading shared libraries: cannot open shared object file: No such file or directory command not found

I assume that there are no installation errors and there is just a little thing missing.
You have to set your Tamino environment by executing following command

. $SAG/ (take care there is an important leading dot (".") followed by a blank (" ")



Dear Timm,
Thank you very much. It is working now. Earlier I was executing the using the shell command “sh”. Thank you for the help.