[PD] warning: class XXX overwritten - what does it mean?

[Matteo Sisti Sette]

Hi,

Can anybody explain what these warning messages mean, appearing on the 
Pd console at startup when I use GEM?:

warning: class 'pix_filmQT' overwritten\; old one renamed 
'pix_filmQT_aliased'
warning: class 'pix_movieDS' overwritten\; old one renamed 
'pix_movieDS_aliased'
warning: class 'pix_videoDS' overwritten\; old one renamed 
'pix_videoDS_aliased'

Should I worry about them?

The strangest thing is that the very same version of GEM can give these 
errors for example on a Vista machine and not on a Windows XP machine. 
Isn't it weird?

thanks
m.

-- 
Matteo Sisti Sette
matteosistisette at gmail.com
http://www.matteosistisette.com