What am I doing wrong? I am building the example in the csl download. Thanks Martin error: cannot find file "Debug/cslVC5505.lib" undefined first referenced symbol in file --------- ---------------- _GPT_close ./csl_gpt_examaple.obj _GPT_config ./csl_gpt_examaple.obj _GPT_getCnt ./csl_gpt_examaple.obj _GPT_open ./csl_gpt_examaple.obj _GPT_reset ./csl_gpt_examaple.obj _GPT_start ./csl_gpt_examaple.obj _GPT_stop ./csl_gpt_examaple.obj _IRQ_clear ./csl_gpt_examaple.obj _IRQ_clearAll ./csl_gpt_examaple.obj _IRQ_disableAll ./csl_gpt_examaple.obj _IRQ_enable ./csl_gpt_examaple.obj _IRQ_globalDisable ./csl_gpt_examaple.obj _IRQ_globalEnable ./csl_gpt_examaple.obj _IRQ_plug ./csl_gpt_examaple.obj _IRQ_setVecs ./csl_gpt_examaple.obj _VECSTART ./csl_gpt_examaple.obj