Can't install CBSubs

When I try to install the core CBSubs module via upload, I get the following error:

"Failed to move uploaded file to /home/repclass/public_html/tmp/ directory."

When I try to install the core CBSubs module via web url, I get the following error:
Unrecoverable error "PCLZIP_ERR_MISSING_FILE (-4)"

I have the proper versions of everything and I set file permissions on the tmp folder to 777.

Please advise asap.
Brett

openpage wrote: When I try to install the core CBSubs module via upload, I get the following error:

"Failed to move uploaded file to <span>/</span>home<span>/</span>repclass/public_html/tmp/ directory."

When I try to install the core CBSubs module via web url, I get the following error:
Unrecoverable error "PCLZIP_ERR_MISSING_FILE (-4)"

I have the proper versions of everything and I set file permissions on the tmp folder to 777.

Please advise asap.
Brett

What Joomla version?
What CB version?
What CBSubs version?
Is ftp layer enabled in Joomla?

PHP Built on: Linux server.realestatephotographyclasses.com
2.6.18-238.12.1.el5.028stab091.1 #1 SMP Wed Jun 1 13:20:25 MSD 2011 x86_64
Database Version: 5.1.56

PHP Version: 5.3.6

Web Server: Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635

Joomla! Version: Joomla! 1.5.22 Stable

CB version is : 1.4

CBSubs 1.2.2

Don't know where to find FTP layer setting in Joomla.

Will be happy to give you login codes on a secure channel.

Please navigate to Site > Global Configuration > Server > FTP Settings and check if FTP is configured. If it is then please disable it and try installing again. If it isn't then please try enabling it and try installing again. Seams like some sort of permissions issue perhaps. Often there's no need for 777 and sometimes is too much permissions for a host and thus blocks all access; please try 755.