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I'm trying to upload a Shiny App to shinyapps.io in Showcase mode. According to those directions, one includes a text file named DESCRIPTION (no extension) with the following fields (this is from the example linked above:

Title: Hello Shiny!
Author: RStudio, Inc.
AuthorUrl: http://www.rstudio.com/
License: GPL-3
DisplayMode: Showcase
Tags: getting-started
Type: Shiny

This answer describes the same process - but, it seems like it doesn't work any longer.

When I try to publish a Shiny App with a DESCRIPTION file like the one int he example, the following error is returned:

Preparing to deploy application...DONE
Uploading bundle for application: 88219...Error in readDcf(file.path(project, "DESCRIPTION"))[, "Package"] : 
  subscript out of bounds
Calls: <Anonymous> ... suppressMessages -> withCallingHandlers -> <Anonymous> -> unname
Execution halted

For what it's worth, I tried excluding different fields from the DESCRIPTION file, even trying one with only DisplayMode: Showcase included. I also tried saving the file in different editors.

This Google Groups thread seems to suggest this is a bug, but since there doesn't seem to be a question posted about it other than when this worked, I hoped to see if anyone had found or could suggest a fix.

EDIT: I posted an Issue on the Shiny Apps GitHub page.

Community
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Joshua Rosenberg
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2 Answers2

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Installing the latest version of packrat from GitHub (i.e., devtools::install_github("rstudio/packrat") did the trick, thanks to this GitHub Issue suggestion. Installing the latest CRAN version (install.packages("packrat")) did not work.

Joshua Rosenberg
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I open my shinyapp on the shiny server in Showcase mode using DESCRIPTION file with additional fields that were not described in documentation and it works. 

Package: MyShinyApp
Version: 1.0
Title: Hello Shiny!
Author: RStudio, Inc.
AuthorUrl: http://www.rstudio.com/
License: GPL-3
DisplayMode: Showcase
Tags: getting-started
Type: Shiny

Adding fields Package and Version will resolve this error ERROR system error 71 (Protocol error) [description=Version field not found in...]

Alexander Borochkin
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