If you could do a little bit research and gather more information it 
would speed up the process to have an answer.

Some questions you can ask yourself are:

1) Is the issue only happening in one directory or for all directories? 
Do you see files under another directory?
2) Is there file inside that problematic directory, physically? You can 
check that by launching a "telnet" session from 'Target Navigator" and 
do a "ls" on that directory.
3) Do you set any filter in Target File System Navigator? You can check 
that by clicking the down arrow at the top right conner to bring up the 
"Table Parameters" option dialog. Make sure you select the "Show table" 
checkbox, and check at least the "File name" box.
4) What have you done between the time you could see the files inside a 
directory and now you don't see files?
5) Can you try to reboot your target and your IDE to see if problem 
still exist?

Regards,
Andy

Mohammad Dadashzadeh wrote:
> Hi everyone,
>
> I could not see the files inside a directory in target file system navigator, I had been able to do it before but I do
 not know what happened?
>
> Regards,
> Mohammad
>
>
>
> _______________________________________________
>
> General
> http://community.qnx.com/sf/go/post35415
>
>   

Old version has a bug where all columns become 0 size sometimes. 
To restore proper size 
open view menu (triangle button) and select Columns submenu (don't remember exact name)
It will open a dialogue where you pick columns - just click Ok - it will reset size.