Hiii everybody

I'm currently doing a web server for VxWorks.
All work perfectly until a "Coprocessor Error"

Is there anybody who can explain me what does "Coprocessor Error" mean exactly ?

Here is my error report:

Coprocessor Error

Page Dir Base : 0x1fef4000
Esp0 0x19ed8644 : 0x277c3bb2, 0x00000000, 0x00000000, 0x19fd8808
Esp0 0x19ed8654 : 0x19ed8694, 0x1ec02028, 0x19ed8690, 0x00000000
Program Counter : 0x1ec00ef7
Code Selector : 0x00000008
Eflags Register : 0x00010246
Task: 0x1c9e2aec "tShell"

Thank you very much for your help