I have MikTeX 2.9 installed on Windows 10. All packages are updated (in Admin as well as in User mode).
When I tried to used Biber I got an error message:
INFO - This is Biber 2.7
INFO - Logfile is 'main.blg'
INFO - Reading 'main.bcf'
ERROR - Error: Found biblatex control file version 2.9, expected version 3.3.
This means that your biber (2.7) and biblatex () versions are incompatible.
See compat matrix in biblatex or biber PDF documentation.
INFO - ERRORS: 1
In package manager the following versions were shown:
- 2.7 for miktex-biber-bin-x64
- 3.7 for biblatex
Reinstallation of these packages did not solve the problem.
I checked which biblatex file is used in the system with the following command (open cmd window and simply type this)
The output was:
C:/Users/xxx/AppData/Roaming/MiKTeX/2.9/ is basically used to install packages installed "on the fly".
I searched if there are other files
biblatex.sty in the system and it turned out that the second copy was stored in the MikTeX installation folder:
c:\Program Files\MiKTeX 2.9\tex\latex\biblatex\
I am not sure what it means. Is it that my MikTeX installation is corrupted or I have double installation of biblatex nor what is the reason for all this.
I made a simple test. I change the folder
C:/Users/xxx/AppData/Roaming/MiKTeX/2.9/tex/latex/biblatex/ name to
and copy the whole folder from
c:\Program Files\MiKTeX 2.9\tex\latex\biblatex\ to
Next I cleared all generated files in my tex project folder (it is important) i.e. delete *.aux, delete *.bcf, ... etc. and recompiled the project again with pdflatex, next biber, next pdflatex