diff -Naur espgs.orig/lib/pdf_font.ps espgs/lib/pdf_font.ps
--- espgs.orig/lib/pdf_font.ps	2005-08-14 02:06:06 +0400
+++ espgs/lib/pdf_font.ps	2006-05-24 17:51:33 +0400
@@ -191,7 +191,17 @@
 		% by scaling the Widths if necessary.
       0.001 2 index /FontMatrix get 0 get div
 		% Stack: font font-res mscale
-      1 index /FirstChar oget dup 1 4 index /LastChar oget
+      1 index /FirstChar knownoget not {
+        1 index /FirtsChar knownoget {
+          (   **** Warning: /FirstChar is misspelled as /FirtsChar.\n)
+          pdfformaterror
+        } {
+          0
+          (   **** Warning: /FirstChar is mossingm, assuming 0.\n)
+          pdfformaterror
+        } ifelse
+      } if
+      dup 1 4 index /LastChar oget
        {	% Stack: font font-res mscale first-char index
 	 Encoding 1 index dup 2 index length ge {
            (   **** Warning: Font Encoding array size is smaller than character range.\n)