I'm having the same problem as mboshell did from the post (overview pic trouble dated 27 april 2010..)
here is my overview
<html>
<head>
<title>Overview</title>
</head>
<body>
<! --- ----------------------------->
<! --- TEXT FOR MISSION TITLE --->
<! --- ----------------------------->
<br>
<h2 align="center"><a name="Main">OVERVIEW TEST<br>unknown</a></h2>
<!-- Overview Picture -->
<p align="center"><img src="T80.jpg" width="128" height="64"></p>
<! --- ----------------------------->
<! --- TEXT FOR DESCRIPTION --->
<! --- ----------------------------->
<BR>
<p>
look at the tank. how pretty.
<br><br>
developed by E.Tait aka BlackAdder<br>
</p>
<! --- END OF OVERVIEW>
</body>
</html>
After this I pasted my screenshot into microsoft paint as T80 as a jpeg and cut the bit i want to 500x500 dimensions then resaved it onto a border set at 508x508 then saved it again. I put this overview and jpeg into the mission folder, save it to single missions then when i try too look at the overview on the single missions menu i get an error pop-up
Image missions\__cur_sp.intro\T80.jpeg: dimensions 508x508 not 2^n
Can anybody tell me what I'm doing wrong? thanks in advance