Crash!

[Polak]

Hi! I'm from Poland and I sometimes don't understand English language. But I can speak in level secondary school :)

I have a problem... CRASH
I don't understand this, do you help me? please [*]

Dump written 2014-1-23_16-25
Version: 1.5.2
Window: "<Unknown Window Name>"
Reason: {badarg,[{erlang,list_to_binary,
[[78,105,101,32,109,111,380,110,97,32,112,111,119,
116,243,114,122,121,263,32]],
[]},
{wings_lang,expand_utf8_2,3,
[{file,"wings_lang.erl"},{line,222}]},
{wings_lang,expand_utf8_1,2,
[{file,"wings_lang.erl"},{line,218}]},
{wings_lang,expand_utf8_0,1,
[{file,"wings_lang.erl"},{line,214}]},
{wings_lang,expand_utf8,1,
[{file,"wings_lang.erl"},{line,207}]},
{wings_lang,load_file_1,2,
[{file,"wings_lang.erl"},{line,156}]},
{wings_lang,load_language_2,3,
[{file,"wings_lang.erl"},{line,101}]},
{wings_lang,load_language,3,
[{file,"wings_lang.erl"},{line,92}]}]}