Thanks for your suggestion, Rob. The Params::Validate module was the one causing the MSVCR90.dll error messages. I re-installed it from AS repository using ppm and the error message is no longer displayed. What was a bit odd was that Params::Validate 0.95 was already installed on my machine, but running the command 'ppm install Params-Validate' (re-)installed the module without requiring --force and without issuing any warnings about the module already existing. Thanks again for your help. Roy.
"Its not how hard you work, its how much you get done."