error message on closing down software

[petsinparadise]

can you please help me determine what this message means.
when i close down my software, usually the options for backup etc pops up but i am receiving this message first.

unable to open the registry key "Software\Actinic\Catalog8" Insufficient system resources exist to complete the requested service.

maybe this is nothing but i have not seen it before, can you advise please what i should do and what it means.

many thanks.

[wjcampbe]

This is an operating system error, so you need to look for a solution in the support area for your OS.

Maybe support.microsoft.com ?

[Duncan Rounding]

This is nothing to do with Actinic.

Search the internet this is a fairly common issue with Vista and occasionally with XP. Make sure you have more than the required RAM installed, especially if you are running Vista.

[petsinparadise]

error message on closing down software

Thanks to wjcampbe and drounding, have got some advice and have sorted problem by closing down Snapfire which was very hungry!