The error is produced because Crystal Reports failed to install.
As we do not control the Crystal Reports Installer there is a limit as to what we can do. However here is the command line that is used to initiate the install. This can be run from a command line after running the Pharos Reports installer.
We believe this gets extracted to the %TEMP%
%TEMP%\CrystalReports11_NET_EmbeddedInstall.msi /qn /l*v "%TEMP%\CrystalInstallLog.log"
In the command line statement above the last portion is where it writes a log file. So you should be able to find this on the failed machine in the %TEMP% Directory on the machine having an issue.
In cases where have seen this issue the Crystal Reports is trying to install to the C-drive and there is not enough space to install it.