content of symbol not visible in AE, but does preview

hi,

I have a symbol with content (rectangles, text, picture), but the content is nog shown in AE...

However, if I preview it shows up perfectly.

Please have a look at the screenshots:

- 01 >> you can see there is a symbol selected, and is placed next to the artboard, but the content isn't shown..

- 02 >> same thing if I go inside the symbol

- 03 >> preview in the browser and the symbol is shown perfectly..

Here is the project:

http://we.tl/BTmcHoydMw

thanks having a look.

regards, j