Format error discovered in the file in sub-document

[dman1120]

I really need some help. I have created a power point and not can not get it to open I keep getting the same error everyone else is getting it is in odp format

[RoryOF]

Either you follow the suggestions on how to fix this, by unzipping the .odt archive and correcting the
error in content.xml, or you need to upload the file to the Forum or via a filesharing site so someone else can look at it.