Thanks a lot to Jeff and Yihui -  it seems that only fairly large rmd files have this problem, and yes, dropbox is running. So next time it happens I'll remove it out of dropbox to see what happens. Otherwise I'll try the development version, thanks Yihui!

BW

Troels


Den 20-04-2021 kl. 19:48 skrev Yihui Xie:
It's hard to tell what's going on without a reproducible example.
Perhaps it was because of ant-virus software or a network drive as
Jeff guessed.

The development version of rmarkdown
(https://github.com/rstudio/rmarkdown) will no longer generate the
intermediate *.utf8.md file. I'm not sure if that would help. You may
try remotes::install_github('rstudio/rmarkdown').

Regards,
Yihui
--
https://yihui.org

On Tue, Apr 20, 2021 at 11:42 AM Troels Ring <tr...@gvdnet.dk> wrote:
Thanks a lot - the error is not constant so I  have not tried a minimal example 
yet but  the info is below, thanks a lot

Troels

xfun::session_info('rmarkdown')
R version 4.0.5 (2021-03-31)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19042), RStudio 1.4.1106

Locale:
   LC_COLLATE=Danish_Denmark.1252  LC_CTYPE=Danish_Denmark.1252    
LC_MONETARY=Danish_Denmark.1252
LC_NUMERIC=C                    LC_TIME=Danish_Denmark.1252

Package version:
   base64enc_0.1.3   digest_0.6.27     evaluate_0.14     glue_1.4.2        
graphics_4.0.5    grDevices_4.0.5
highr_0.8         htmltools_0.5.1.1 jsonlite_1.7.2    knitr_1.31        
magrittr_2.0.1    markdown_1.1
methods_4.0.5     mime_0.10         rlang_0.4.10      rmarkdown_2.7     
stats_4.0.5       stringi_1.5.3
stringr_1.4.0     tinytex_0.31      tools_4.0.5       utils_4.0.5       
xfun_0.22         yaml_2.2.1

Pandoc version: 2.11.4



Den 20-04-2021 kl. 18:08 skrev Yihui Xie:

Could you provide a minimal reproducible example along with your
xfun::session_info('rmarkdown')? Thanks!

Regards,
Yihui
--
https://yihui.org

On Tue, Apr 20, 2021 at 11:06 AM Troels Ring <tr...@gvdnet.dk> wrote:

Dear friends - newly installed windows 10 and R version 4.0.5
(2021-03-31) -- "Shake and Throw" and newest version of RStudio I tend
to get an error when knitting to html.

The message I get is ("applications-of-charge-balance-160421.rmd" is my
file name)

/output file: applications-of-charge-balance-160421.knit.md//
/

/then (in my translated Danish) //
/

/Error in file(con,   "w") : cannot open connection/

/call: <Anonymous> ... extract_preserve_chunks -> write_utf8 ->
writeLines -> file//
/

/In file(con, "w") ://
//  cannot open file 'applications-of-charge-balance-160421.utf8.md':
Invalid argument//
//run aborted/

But when I then simply try again it works well with no troubles.

I wonder what error I have done?

All best wishes

Troels Ring,
Aalborg, Denmark



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