Strange Error Message When Trying To Do Shadow Casting

display:gsg:glgsg(error): at 4992 of c:\panda3d=1.7.0\panda\src\glstuff\glGraphicsStateGuardian_src.cxx: GL eror 1281

What is all that? Wow, the hairs on the back of my neck are standing up!

:display:gsg:glgsg(error): c:\buildslave\release_sdk_win32\bu
rc\glstuff\glGraphicsBuffer_src.cxx, line 1020: GL error 1282

i have the same message in command line. but my program run well.

My app don’t run well with that error. The fps drops and no shadows are ever shown. The only way to avoid the error is delete the spot light that’s acting as a shadow maker.