Linker error 2DDrawing

[pif]

Hello

I have a problem with 2DDrawing with purebasic 4.2 final
When i run my program in the IDE i have this message

DDrawing.a(DDrawing_THREAD.o):(.bss+0x0):multiple definition of `PB_2DDrawing_Mode' DDrawing.a(2DDrawing.o):.bss+0x0):first defined here

With the previous beta all work fine with the same code

Tanks

Edit:
When i use "create executable" all work fine

Ubuntu 7.04
PB 4.2 Final
CPU P4 3.0 Ghz