Hi,
I've application to capture video of image, grab the still image and process it. It runs well until I put loop to regrab and the still images many times automatically.. and the error happened. The error is “ Null reference exception was unhandled.” I found that the error happened when I call one image file :

//// apply filter subtract===>>>> call file from out bin folder <<<<=====
...

I've application to capture video of image and grab the still image. It runs well untill I put loop to regrab the still images many times automatically.. and the error (generic error occured GDI+) happend.
For your information, I also run different code of application that have similar function which to capture the image repeatedly that I found from internet. However, it give the same error message.
I think maybe I've to setup something...