Lpc2000

Hello all,
 I´m trying to get debugging work. I built a Wiggler HW according to 
the schematica on this site. 
I´m using a board with an LPC2106 (Elektor). 
I have no problem connecting at speed 1 (probably because the PC I´m 
using is a bit slow). I´m able to start downloading the *.elf file. 

Normaly the fist download fails, the second one seems to bee ok - but 
after the fist debugging step it crashes. 
When I download everything a third time. Then I´m able to step into C-
Main.
But simply start and waiting to break at the Breakpoint in Main also 
fails after the third download.
I´m using the WinArm environment.

Can anybody tell me what I´m doing wrong?

Is there an other free debugging tool like Insight/gdb which works 
more reliant.

Greetings,
Eddy