Big white box over presentation when using impress

When I go to present my slides there is a large white box with a pause sign when obstructs the rest of the slides. Please help dont want to have to redo the whole presentation again.

Hi diacke,

It might be more useful for you to upload the first three slides of your presentation so that one can try to emulate what you are doing from the same source. I tried to emulate the occurrence of the white block by creating a quick presentation and by running it the white block did not make its appearance. A sample will be helpful to support you better.