Lyx Error when inserting figure floats

[roli]

Hi,

after
-creating a new Lyx document
-inserting an figure float
-inserting a picture into the float (/daten/roli/lyx/bilder/1sin.ps)
-setting the title for this picture "Probe-Bild"

i get the folowing two errors if i want to see a (dvi, ps, pdf ...) preview:
Error 1:

Paragraph ended before \@caption was complete.
 ...f1/_daten_roli_lyx_bilder_1sin}Probe-Bild}
                                                 
I suspect you've forgotten a `}', causing me to apply this
control sequence to too much text. How can we recover?
My plan is to forget the whole thing and hope for the best

Error 2:

Argument of \@caption has an extra }.
 ...f1/_daten_roli_lyx_bilder_1sin}Probe-Bild}
                                                 
I've run across a `}' that doesn't seem to match anything.
For example, `\def\a#1{...}' and `\a}' would produce
this error. If you simply proceed now, the `\par' that
I've just inserted will cause me to report a runaway
argument that might be the root of the problem. But if
your `}' was spurious, just type `2' and it will go away

I'm using Lyx version 1.3.3 build on 25.09.2003. I expect this should work, on my old comupter with a Suse 8.x this works fine. Whats wrong with my system, or with me?

Thanks

Roland