Error Installation Plesk 9.3

Hi,
When I try to install Plesk 9.3, in the last step, I have the next problem:

N) Next page; P) Go back; Q) Cancel installing;
A) Select all; D) Deselect all;
Enter number to toggle the component or to overview the group;
Type a number or a character of desired action [N]: N
Retrieving information about the installed packages...
Downloading the file PSA_9.3.0/update-rpm-CentOS-5-i386/update-9.3.0-cos5-i386.hdr.gz: 10%..20%..30%..40%..50%..60%..70%..80%..90%..100% done.
Downloading the file PSA_9.3.0/dist-rpm-CentOS-5-i386/build-9.3.0-cos5-i386.hdr.gz: 10%..20%..30%..40%..50%..60%..70%..80%..90%..100% done.
Downloading the file PSA_9.3.0/thirdparty-rpm-CentOS-5-i386/thirdparty-9.3.0-cos5-i386.hdr.gz: 11%..20%..31%..40%..52%..61%..70%..82%..91%..100% done.
Determining the packages that need to be installed.
ERROR: Unable to install the "psa-9.3.0-cos5.build93091230.07.i586" package.
Not all packages were installed.
Please, contact product technical support.


I had try to install this rpm only, with "rpm -Uvh"
but when try install again, I have the same problem.

Someone, can help me?
Thanks very much.