A couple of thoughts.
Are you on a corporate blackberry? if so it may be restricted by policy
How large are the files your trying to send or save? there are limits in this also.
As for photos. not all are compatible with a BB OS.
The following picture formats are supported:
The following document formats are supported:
Another issue may be the amount of memory free either on the installed storage card or the SIM. Too many apps will cause many issues.