Error converting dsl to mobi

[llyonard]

Im trying to convert the attacched dictionary but im getting this error while using kindlegen (log in italian, sorry)

Info:I9021:opzione: (nascosto) crea file mobi per dispositivi più vecchi.
Info(prcgen):I1047: Metadati aggiunti dc:Title        "Devoto-Oli (Ita-Ita)"
Info(prcgen):I1047: Metadati aggiunti BASICCode       "REF008000"
Info(prcgen):I1047: Metadati aggiunti dc:Subject      "Dictionaries"
errore(core):E1005: Non è stato possibile accedere al file.
      nel file: C:\Users\inner\Downloads\Dizionario\Dizionario\OEBPS\style.css
Info(prcgen):I1002: Analisi in corso dei file  0000325

Am i missing something?

ita-ita_DevotoOli_1_0-GD.zip

English log

Info:I9021:option: (hidden) create mobi files for older devices.
Info(prcgen):I1047: Metadata added dc:Title "Devoto-Oli (Ita-Ita)"
Info(prcgen):I1047: Metadata added BASICCode "REF008000"
Info(prcgen):I1047: Metadata added dc:Subject "Dictionaries"
error(core):E1005: The file could not be accessed.
in file: C:\Users\inner\Downloads\Dictionary\Dictionary\OEBPS\style.css
Info(prcgen):I1002: Parsing files 0000325

[ilius]

I pushed a commit.
Please try again.

[llyonard]

Strangely i havent any error but still there is no mobi file as output