Ok here we go:
*** ERROR L220: INVALID INPUT MODULE
MODULE: .\DP8051\DP8051_Keil_903\Debug\UM6 Sensor Test.lib (-----)
*** Internal Reference: processlib3The command 'LX51.exe' failed with exit code '3'.
If I put Browse Information to TRUE in the Compiler's Build Settings it
links correctly but cannot (obviously) debug otherwise it gives that error.
This is weird !