If Dynaloader is complaining about the version number as I suspected, is there not a way of specifying the version number to be used for the module that you are calling.
Tried looking this idea up and the code I could find went along these lines,

use BerkeleyDB 0.22;

But this failed to work, it still gave exactly the same error message.
Can I specifically state which version of the Perl module to use?
Cheers