Save file in shared

Hello,

I am trying to save and read a file in “shared”, but I do not seem to get it working.

I have set the read- and writepremissions.
I have set the file write scope to : shared
and the file read scope to : shared.

I tried with different filenames :
noslash.txt reports the file is saved but when I try to read it the app crashes
/oneslash.txt reports the file is saved but when I try to read it the app crashes
//twoslash.txt gives error 2106 on save and error 2101 on read (not written so cannot be found)
///threeslash.txt gives error 2106 on save and error 2101 on read (not written so cannot be found)

Can you tell me what I am doing wrong?
Thank you,
Ineke