Hi mister_e,

are you from Melab, because u wrote it like u are ?

Now i can say that this failure only appears if I use composite devices.
Such as keyboard and mouse. Therefore I modified the the usb18.asm
a little bit, because melab don't support composite. (reportdescriptor x2)
The device works good but not the 1-2 seconds after plugin in.
Seems like it do some reset or overwrites something.

Have you done something like this before ?

regards
sirnoname

ps. 18f2455, 2550 ...