problems with windows photo collection

[eiliis]

i'm sorry i don't know the exact corrispondent in english of raccolta foto...anyway the one you use to display photo with pc..the default one...well i have a problem...it doesen't save the changes anymore!it says it can't..there wasn't such a problem not long time ago...what can i do??
thank you very much.ah a tryed to reinstall it but it didn't work.please help me!

[dennis cannon]

I hope this might help I had same problem while ago ,
check the file extension at end of picture file name and if it not able to be edited
put it in paint then "save as" Jpg or tiff thats bigger
go back to gallery and it should be good then