[v6 General Discussion] EasyWorship Won't send anything to your screen? This might help.
After working with a customer who could not get anything to output from EasyWorship or render in the preview areas of EasyWorship, we found that their laptop, which had switchable graphics had updated the intel graphics driver. I'm guessing Microsoft pushed this through Windows updates. We went to the laptop manufacturer website and downloaded the intel video card driver and installed it, ignoring the warnings that there was already a newer driver installed. Viola! It's working again. Maybe this will help others who have experienced issues like this after recent Windows updates.
This should be fixed in the latest update. 6.7.5