a problem with biber

dear miktexers:

i use miktex 2.9 (32bit) on a Windows 7 (64bit)
computer. i have been working on a book.
my references are generated by biber.

yesterday everything seemed to be perfect.
today after correcting some mistakes in my tex file
and running then  pdflatex once i have started biber.

however i have got an error message

  (a) exit code 1

(b)
Command Line:   biber.exe "PeremelemModszer2013"
Startup Folder: E:\PeremelemModszer\PEM-2013

data source 
C:\Users\GYOERG~1\AppData\Local\Temp\par-47796f6572677920535a4549444c\cache-63038a22a6dc2bcfc65352f2f3a3448ce3f3ab68\recode_data.xml 
*not found in .*
INFO - This is Biber 1.6
INFO - Logfile is 'PeremelemModszer2013.blg'

what the file biber misses is a temporary file. i do not know
what have i done wrong.  any help is highly appreciated.


thank you in advance.

györgy szeidl

----------------------------
prof. györgy szeidl
department of mechanics
university of miskolc
h-3515 miskolc.egyetemváros
hungary
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