I'm trying to install some third party software and I'm getting an error by the installer that returns:

sh: /tmp/install/bin/gnutar: No such file or directory

Could anyone tell me how to resolve this issue? I'm sure it's a Linux issue and not an issue with the installer.

Thanks...

I believe that your diagnostics are incorrect. I believe that this is an issue with the installer and not with Linux. Here's why. The error message comes from the bash shell. It is saying that the file or directory listed does not exist. It is pretty safe to say that the installer has its own version of GNU tar which it has tried to put in the /tmp directory. Now it cannot find what it thought it put there. There is a good chance that the /tmp area ran out of space while the installer was putting files in /tmp.

Is the partition with the /tmp directory nearly full?

Are you running the installer from the root account or from a normal user account?

Apparently the installer is a bash script so you could read it to see what it is trying to do.

Stress_junkie, right you are. It looks like it is a problem with the installer. It looks as though the installer puts gnutar.Z in the /tmp/install/bin folder.

So the error being thrown makes it look like the installer is unable to decompress gnutar.Z. Does this sound right? And I'm a relative newcomer to Linux, but installing gzip should give the installer what it needs to decompress this file shouldn't it?

The uppercase .Z extension indicates it was compressed using the old Unix tool 'compress', which is a bit unusual for Linux sw to use (most use gzip these days).
Are you sure this stuff will work on Linux?
Having said that, I'd be surprised if you don't already have gzip as part of your core install.
I notice that on my FC6 box, I don't seem to have the compress tool installed; that may be your prob also.