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I have two computers:

  1. Windows Vista and Microsoft Office 2010.
  2. Windows XP service pack 3 and Microsoft Office 2007

I worked on the first computer on Office 2010 and I saved in the format .pptx on a USB pen drive. I closed this and I went on the second computer.

I opened the document on the second computer and I have the following problem:

When there is a text box with a description, I can't change that description but I can add a new picture and write new text. If I go back to the first computer with the changed document. The problem is there as well.

Does anyone know what could be causing this?

NOTE: I thought that it might be a protection issue on the file but the permissions seem fine.

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When you say, "text box with description", what do you mean? Is that an image with a caption? – Peter Apr 2 '13 at 12:59
Hi. Before I write in text box and after the save, this is saved how the picture. And after I don't changed the textbox – Mirko Cianfarani Apr 2 '13 at 13:03

It sounds as though the first computer is saving as PPT rather than PPTX, or you're saving as a PowerPoint PICTURE presentation instead of as a regular presentation.

In PPT 2010, go to File | Options | Save The first item in the Save pane allows you to choose the default format for PPT to save in. Make sure it's PowerPoint Presentation and not the 97-2003 version.

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