on Galaxy S5 the Gallery shows message "Unfortunately, Gallery has stopped".

[jodgale]

I am unable to access it at all. I cleared the cache, but nervous about clearing data. Afraid i'll loose stored photos.

 

[belodion]

Welcome.

Don't worry, you won't lose photos.

 

[jodgale]

Thanks. Do I just 'clear data' ?

 

[jodgale]

Thank you. I took the plunge, fingers crossed in the old fashioned way, deleted data and all is back to normal.