DataGrid Export to PDF - unable to retrieve unicode ranges

[Chad]

I'm hoping someone has seen this before.

On one web server (and only one) the following exception is being generated when the grid data is exported to PDF:

"System.Exception: Unable to retrieve Unicode ranges. at Telerik.Pdf.Gdi.GdiUnicodeRanges.LoadRanges(GdiDeviceContent dc) at ... [more stack]

 I've disassembled the Telerik assembly that contains the LoadRanges function and this function contains a call to a Windows API function, i.e.

int fontUnicodeRanges = NativeMethods.GetFontUnicodeRanges(dc.Handle, glyphSet);

if (fontUnicoderanges == 0)

{

   [code]

}

else

{

   throw new Exception("Unable to retrieve Unicode ranges.");

}

The NativeMethods.GetFontUnicodeRanges maps to the following gdi32.dll Windows API function:

internal static extern int getFontUnicodeRanges(IntPtr hdc, GlyphSet lpgs);

The return code from this function is 0 (ERROR).  Does anyone know what might cause this particular situation when exporting to PDF from the Telerik grid? I'm using the default PDF export functionality of the grid.

 

[Chad]

That code section should be:

if (fontUnicodeRanges != 0)