LibreOffice version 4

[Joe Zeff]

On 02/09/2013 01:32 PM, Heinz Diehl wrote:
> You have to
> fight with incompatibilities because you're using Impress while all
> the machines at the congresses are solely running Powerpoint (which causes
> incompatibilities when used to display .odp files). That's hard
> enough.

I know that Impress can save in Powerpoint format, with the appropriate 
extension.  Have you tried that, and if so, does it help? 
(Impress/Powerpoint aren't programs I need, so I have no way of knowing 
on my own.)