Thanks Frederick,

That worked perfectly. I modified environment.rb as follows :-

config.load_paths += %W( #{RAILS_ROOT}/lib/soap_clients/company #
{RAILS_ROOT}/lib/mt_lib)

# Make sure load_once_paths is a subset of load_paths
config.load_once_paths +=  %W( #{RAILS_ROOT}/lib/mt_lib)



On Mar 30, 6:24 pm, Frederick Cheung <[email protected]>
wrote:
> On Mar 30, 6:20 pm, sweet61 <[email protected]> wrote:> The error thrown 
> is
>
> >     ArgumentError (A copy of MtLib::DBValidations has been removed
> > from
> >       the module tree but is still active!):
>
> > My question is what is the process that is followed when cache_class
> > is set to false. Does Rails re-run any of the initialization methods?
> > If not then where is the best place for me to put my patch to ensure
> > that it is in all models and survives a classes reload?
>
> It doesn't rerun any initialization. If you add your file to
> ActiveSupport::Dependencies.load_once_paths then it won't get
> unloaded.
>
> Fred
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