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in reply to Re^5: Citrus Perl: problems trying to load additional modules
in thread Citrus Perl: problems trying to load additional modules

stefbv: DWIMPerl is not in the PATH (although a DWIMPerl installation exists on the machine).
Like I said in the OP, I went religiously through the Citrus Perl installation steps, including citrusvars.bat.

Here is the current PATH (newlines inserted for readability):

F:\Win7programs\Citrus\perl\site\bin; F:\Win7programs\Citrus\perl\vendor\bin; F:\Win7programs\Citrus\perl\bin; F:\Win7programs\mingw64\bin; C:\Windows; C:\Windows\System32\Wbem; C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\; C:\Program Files\Microsoft SQL Server\100\Tools\Binn\; C:\Program Files\Microsoft SQL Server\100\DTS\Binn\; C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Com +mon7\IDE\; C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\; C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common; F:\Win7programs\Python25; F:\Win7programs\TortoiseSVN\bin; F:\Win7programs\cygwin\bin; C:\Program Files (x86)\IDM Computer Solutions\UltraEdit\; C:\Windows\System32\WindowsPowerShell\v1.0\;

It refers to Citrus Perl only.
It seems like somehow CPANPLUS decided to locate its extraction top directory (tree-top) (for all Perl versions) below the DWIMPerl top directory.

But that is not supposed to influence installing modules.