Crashing browser

[mune]

Ok - an easy one for ya all:
2 scenes - "rewind" and "next scene" button on each scene. Play scene 1 -ok - stops with action command. Press "next scene" and browser crashes with close prog alert.
All of the button and scene attribs are ok as far as i can see.

Thanks for any help.
m

[mune]

soz,
both IE4 and Netscape4 do this.
m