Both itssues are related. A .pptm file is a Macro-enabled PowerPoint
Presenation (in 2007). If the presentation contains macros, it must be saved
in that format. A .pptx is a regular PowerPoint presentation. Presentation
without macros should be in that format. If the file has no macros, just
choose Save As from the Office button and pick the .pptx format to save it.
I believe the exclamation point on the icon reflects the "m" status of the
presentation.
--David
--
David M. Marcovitz
Author of _Powerful PowerPoint for Educators_
http://www.PowerfulPowerPoint.com/
Microsoft PowerPoint MVP
Associate Professor, Loyola University Maryland