From Forum Nokia Wiki

This known issue was originally created by Otsov and has been verified by Forum Nokia.

ID	KIJ000820	Creation date	February 11, 2008
Platform	S60 3rd Edition	Devices	Emulator
Category	Symbian C++	Subcategory	Graphics, SVG

Keywords (APIs, classes, methods, functions):

Description

When trying to create an icon with either of the following functions

 AknIconUtils::CreateIconL()
 AknsUtils::CreateIconL()

and a .mif or .mbm file which is indexed with an index greater than the range of TInt16 (that is, above 32767), AknIcon 5 panic is raised for debug builds (that is, the emulator).

Solution

The panic is raised for debug builds (that is, the emulator) only. CreateIconL() functions have __ASSERT_DEBUG statements for image and mask index values - a panic is always raised if index > KMaxTInt16.

In release (device) builds, these functions leave with error code KErrEof (-25).

Because of the way images are indexed in .mif files, the maximum safe number of icons in a single mif file is KMaxTInt16/4 (8192).