I'm not familiar with the Rails upgrade process for an app, but did
the Prototype code get updated within your public directory?

On Jan 29, 4:40 am, riky <riccardo.roa...@gmail.com> wrote:
> Hi,
> i made an application using rails and prototype and all worked fine...
> But today i upgraded rails to 2.2.2 and from that moment when i open
> the webpage with firefox it gives me an error like "object is null"
> and some prototype "helpers" doesn't work at all as for example the
> observe_field...
> Can anyone help me?
> Thanks,
> Riccardo
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