mozplugger 1.10.1-1.i386 does not load with nspluginwrapper 0.9.91.5.i386 for me:
*** glibc detected *** /usr/lib/nspluginwrapper/npviewer.bin: double free or
corruption (!prev): 0x093fac38 ***
======= Backtrace: =========
/lib/libc.so.6[0x4057e4]
/lib/libc.so.6(cfree+0x96)[0x407846]
/usr/lib/nspluginwrapper/npviewer.bin[0x804f71b]
/usr/lib/mozilla/plugins/mozplugger.so(NPN_DestroyStream+0x2d)[0x115b3d]
/usr/lib/mozilla/plugins/mozplugger.so(NPP_WriteReady+0x47)[0x1128d7]
/usr/lib/mozilla/plugins/mozplugger.so(Private_WriteReady+0x24)[0x116024]
/usr/lib/nspluginwrapper/npviewer.bin[0x804afd2]
/usr/lib/nspluginwrapper/npviewer.bin[0x8053ced]
/usr/lib/nspluginwrapper/npviewer.bin[0x8054ca9]
/usr/lib/nspluginwrapper/npviewer.bin[0x804abe1]
/lib/libglib-2.0.so.0(g_main_context_dispatch+0x1e8)[0x429a098]
/lib/libglib-2.0.so.0[0x429d743]
/lib/libglib-2.0.so.0(g_main_loop_run+0x1d2)[0x429dc62]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xe0)[0x48a2ac5]
/usr/lib/nspluginwrapper/npviewer.bin[0x80507f1]
/lib/libc.so.6(__libc_start_main+0xe6)[0x3ae5d6]
/usr/lib/nspluginwrapper/npviewer.bin[0x804a8f1]
======= Memory map: ========
00110000-00111000 r-xp 00110000 00:00 0          [vdso]
00111000-00118000 r-xp 00000000 08:05 11457601  
/usr/lib/mozilla/plugins/mozplugger.so
00118000-00119000 rw-p 00006000 08:05 11457601  
/usr/lib/mozilla/plugins/mozplugger.so
00119000-00139000 rw-p 00119000 00:00 0 
00139000-00143000 r-xp 00000000 08:05 8282467    /lib/libnss_files-2.8.so
00143000-00144000 r--p 0000a000 08:05 8282467    /lib/libnss_files-2.8.so
00144000-00145000 rw-p 0000b000 08:05 8282467    /lib/libnss_files-2.8.so
0026c000-00281000 r-xp 00000000 08:05 8283870    /lib/libpthread-2.8.so
00281000-00282000 r--p 00014000 08:05 8283870    /lib/libpthread-2.8.so
00282000-00283000 rw-p 00015000 08:05 8283870    /lib/libpthread-2.8.so
00283000-00285000 rw-p 00283000 00:00 0 
00287000-002a1000 r-xp 00000000 08:05 8282271    /lib/libselinux.so.1
002a1000-002a2000 r--p 00019000 08:05 8282271    /lib/libselinux.so.1
002a2000-002a3000 rw-p 0001a000 08:05 8282271    /lib/libselinux.so.1
002a5000-002aa000 r-xp 00000000 08:05 11091586   /usr/lib/libXdmcp.so.6.0.0
002aa000-002ab000 rw-p 00004000 08:05 11091586   /usr/lib/libXdmcp.so.6.0.0
002ad000-002af000 r-xp 00000000 08:05 11091585   /usr/lib/libXau.so.6.0.0
002af000-002b0000 rw-p 00001000 08:05 11091585   /usr/lib/libXau.so.6.0.0
002b2000-002b5000 r-xp 00000000 08:05 8282474    /lib/libgmodule-2.0.so.0.1600.3
002b5000-002b6000 rw-p 00002000 08:05 8282474    /lib/libgmodule-2.0.so.0.1600.3
002bb000-002c3000 r-xp 00000000 08:05 8283871    /lib/librt-2.8.so
002c3000-002c4000 r--p 00007000 08:05 8283871    /lib/librt-2.8.so
002c4000-002c5000 rw-p 00008000 08:05 8283871    /lib/librt-2.8.so
002c7000-002cb000 r-xp 00000000 08:05 8282484    /lib/libgthread-2.0.so.0.1600.3
002cb000-002cc000 rw-p 00003000 08:05 8282484    /lib/libgthread-2.0.so.0.1600.3
002ce000-00324000 r-xp 00000000 08:05 11090465   /usr/lib/libXt.so.6.0.0
00324000-00328000 rw-p 00056000 08:05 11090465   /usr/lib/libXt.so.6.0.0
0038e000-00392000 r-xp 00000000 08:05 8282255    /lib/libplc4.so
00392000-00393000 rw-p 00003000 08:05 8282255    /lib/libplc4.so
00395000-00397000 r-xp 00000000 08:05 8282488    /lib/libplds4.so
00397000-00398000 rw-p 00002000 08:05 8282488    /lib/libplds4.so
00398000-004fb000 r-xp 00000000 08:05 8283858    /lib/libc-2.8.so
004fb000-004fd000 r--p 00163000 08:05 8283858    /lib/libc-2.8.so
004fd000-004fe000 rw-p 00165000 08:05 8283858    /lib/libc-2.8.so
004fe000-00501000 rw-p 004fe000 00:00 0 
0073c000-00773000 r-xp 00000000 08:05 8282254    /lib/libnspr4.so
00773000-00774000 rw-p 00037000 08:05 8282254    /lib/libnspr4.so
00774000-00776000 rw-p 00774000 00:00 0 
008ae000-008ca000 r-xp 00000000 08:05 11071450  
/usr/lib/libgdk_pixbuf-2.0.so.0.1200.10
008ca000-008cb000 rw-p 0001b000 08:05 11071450  
/usr/lib/libgdk_pixbuf-2.0.so.0.1200.10
00bc8000-00bd1000 r-xp 00000000 08:05 11085196  
/usr/lib/libpangocairo-1.0.so.0.2000.1
00bd1000-00bd2000 rw-p 00008000 08:05 11085196  
/usr/lib/libpangocairo-1.0.so.0.2000.1
00be9000-00c17000 r-xp 00000000 08:05 11085187   /usr/lib/libfontconfig.so.1.3.0
00c17000-00c18000 rw-p 0002e000 08:05 11085187   /usr/lib/libfontconfig.so.1.3.0
00c1a000-00c43000 r-xp 00000000 08:05 11085194  
/usr/lib/libpangoft2-1.0.so.0.2000.1
00c43000-00c44000 rw-p 00028000 08:05 11085194  
/usr/lib/libpangoft2-1.0.so.0.2000.1
00d94000-00db0000 r-xp 00000000 08:05 8282568    /lib/ld-2.8.so
00db0000-00db1000 r--p 0001c000 08:05 8282568    /lib/ld-2.8.so
00db1000-00db2000 rw-p 0001d000 08:05 8282568    /lib/ld-2.8.so
00db4000-00ddb000 r-xp 00000000 08:05 8283867    /lib/libm-2.8.so
00ddb000-00ddc000 r--p 00026000 08:05 8283867    /lib/libm-2.8.so
00ddc000-00ddd000 rw-p 00027000 08:05 8283867    /lib/libm-2.8.so
00ddf000-00de2000 r-xp 00000000 08:05 8283859    /lib/libdl-2.8.so
00de2000-00de3000 r--p 00002000 08:05 8283859    /lib/libdl-2.8.so
00de3000-00de4000 rw-p 00003000 08:05 8283859    /lib/libdl-2.8.so
00de6000-00df9000 r-xp 00000000 08:05 8283866    /lib/libz.so.1.2.3
00df9000-00dfa000 rw-p 00012000 08:05 8283866    /lib/libz.so.1.2.3
00dfc000-00dfd000 r-xp 00000000 08:05 11091606   /usr/lib/libxcb-xlib.so.0.0.0
00dfd000-00dfe000 rw-p 00000000 08:05 11091606   /usr/lib/libxcb-xlib.so.0.0.0
041c1000-0424c000 r-xp 00000000 08:05 11080174   /usr/lib/libfreetype.so.6.3.16
0424c000-04250000 rw-p 0008a000 08:05 11080174   /usr/lib/libfreetype.so.6.3.16
04263000-04343000 r-xp 00000000 08:05 8282472    /lib/libglib-2.0.so.0.1600.3
04343000-04344000 rw-p 000e0000 08:05 8282472    /lib/libglib-2.0.so.0.1600.3
04346000-04385000 r-xp 00000000 08:05 8282476    /lib/libgobject-2.0.so.0.1600.3
04385000-04386000 rw-p 0003f000 08:05 8282476    /lib/libgobject-2.0.so.0.1600.3
043df000-043fa000 r-xp 00000000 08:05 11078680   /usr/lib/libatk-1.0.so.0.2209.1
043fa000-043fc000 rw-p 0001a000 08:05 11078680   /usr/lib/libatk-1.0.so.0.2209.1
043fe000-04491000 r-xp 00000000 08:05 11085199  
/usr/lib/libgdk-x11-2.0.so.0.1200.10
04491000-04494000 rw-p 00093000 08:05 11085199  
/usr/lib/libgdk-x11-2.0.so.0.1200.10
04496000-044d7000 r-xp 00000000 08:05 11072626   /usr/lib/libpango-1.0.so.0.2000.1
044d7000-044d9000 rw-p 00040000 08:05 11072626   /usr/lib/libpango-1.0.so.0.2000.1
04705000-0472c000 r-xp 00000000 08:05 11071217   /usr/lib/libpng12.so.0.29.0
0472c000-0472d000 rw-p 00026000 08:05 11071217   /usr/lib/libpng12.so.0.29.0
0472f000-04b31000 r-xp 00000000 08:05 11085203  
/usr/lib/libgtk-x11-2.0.so.0.1200.10
04b31000-04b37000 rw-p 00402000 08:05 11085203  
/usr/lib/libgtk-x11-2.0.so.0.1200.10
04b37000-04b38000 rw-p 04b37000 00:00 0 
04b3a000-04ba7000 r-xp 00000000 08:05 11085188   /usr/lib/libcairo.so.2.17.5
04ba7000-04ba9000 rw-p 0006d000 08:05 11085188   /usr/lib/libcairo.so.2.17.5
06635000-06650000 r-xp 00000000 08:05 11091602   /usr/lib/libxcb.so.1.0.0
06650000-06651000 rw-p 0001a000 08:05 11091602   /usr/lib/libxcb.so.1.0.0
06653000-06750000 r-xp 00000000 08:05 11091622   /usr/lib/libX11.so.6.2.0
06750000-06754000 rw-p 000fc000 08:05 11091622   /usr/lib/libX11.so.6.2.0
06756000-06765000 r-xp 00000000 08:05 11092201   /usr/lib/libXext.so.6.4.0
06765000-06766000 rw-p 0000e000 08:05 11092201   /usr/lib/libXext.so.6.4.0
06768000-0678d000 r-xp 00000000 08:05 8283868    /lib/libexpat.so.1.5.2
0678d000-0678f000 rw-p 00024000 08:05 8283868    /lib/libexpat.so.1.5.2
0687c000-06880000 r-xp 00000000 08:05 11092428   /usr/lib/libXfixes.so.3.1.0
06880000-06881000 rw-p 00003000 08:05 11092428   /usr/lib/libXfixes.so.3.1.0
06883000-0688b000 r-xp 00000000 08:05 11091752   /usr/lib/libXrender.so.1.3.0
0688b000-0688c000 rw-p 00007000 08:05 11091752   /usr/lib/libXrender.so.1.3.0
068ff000-0692b000 r-xp 00000000 08:05 11092044   /usr/lib/libpixman-1.so.0.10.0
0692b000-0692c000 rw-p 0002c000 08:05 11092044   /usr/lib/libpixman-1.so.0.10.0
06d94000-06d9d000 r-xp 00000000 08:05 11092430   /usr/lib/libXcursor.so.1.0.2
06d9d000-06d9e000 rw-p 00008000 08:05 11092430   /usr/lib/libXcursor.so.1.0.2
06deb000-06df1000 r-xp 00000000 08:05 11092427   /usr/lib/libXrandr.so.2.1.0
06df1000-06df2000 rw-p 00005000 08:05 11092427   /usr/lib/libXrandr.so.2.1.0
06e98000-06e9a000 r-xp 00000000 08:05 11092242   /usr/lib/libXineX Error of
failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  1 (X_CreateWindow)
  Resource id in failed request:  0x4600002
  Serial number of failed request:  7
  Current serial number in output stream:  13
*** NSPlugin Wrapper *** ERROR: NPP_WriteReady() wait for reply: Connection closed