install product package error (Can't add to black list product )

[heymax]

some package install got the following error ,
what's wrong with me ?

Download file versions.inf3: 18%..100% done
Download file PSA_8.0.0/plesk-8.0.0-rhel4-x86_64.inf3: 10%..100% done
Checking for system installed packages...done.
Check for components installation status
Reading system installed packages...done.
Download file plesk-8.0.0-rhel4-x86_64.hdr.gz: 45%..100% done
Download file plesk-8.0.0-rhel4-x86_64.hdr.gz: 100% done
Resolve components
ERROR: Can't add to black list product package drweb-qmail


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Plesk autoinstaller.

[Mixpower]

I have the same thing but my package was Sitebuilder.

[heymax]

me too ..

i mean "some package .. " ..
it like missing something to install those package ..

[jvanv8]

I have the same problem with 7.5.4 but with psa-locale-base-en-US

Is this a symptom of mismatching rpm packages? Did anyone find a fix?