Can't Attach the RDCOMServer package need to create a generic COM object

[swraithel]

I've been working to look through my outlook emails and download the associated attachments. I've been able to complete every step except for the final step using the SaveAsFile.

folderName = "Inbox"

## create outlook object
OutApp <- COMCreate("Outlook.Application")
outlookNameSpace = OutApp$GetNameSpace("MAPI")

#set folder to inbox
folder <- outlookNameSpace$Folders(2)$Folders(folderName)

# items (emails) in inbox
emails <- folder$Items

#example email with attachment
attach_name <- emails(1)$Attachments(2)$FileName()
#attachment exists
[1] "message.html"

#save attachment
emails(1)$Attachments(2)$SaveAsFile(glue("C:/Users/Seth_Raithel/Desktop/{attach_name}") )

The resulting error message is : Warning in library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE, : there is no package called ‘RDCOMServer’ Error in .COM(x, name, ...) : Can't attach the RDCOMServer package needed to create a generic COM object

I've tried installing RDCOMServer but it's not available R Version 3.4.1 Any recommendations or is this simply a compatibility issue?

[duncantl]

I suspect (but can't readily test) that you want to get rid of the class on the result of the call to glue(). e.g. ...$SaveAsFile(as.character(glue("C:/....{attach_name}")) or just avoid using glue() for this very simple task, e.g. file.path("C:/U...", attach_name) which is more sensible.

When RDCOMClient sees a class on an object, it tries to create a COM object.

I suspect that this will resolve the problem and remove the need for RDCOMServer. However, if you want RDCOMServer, you can build it from source if you have Rtools installed.

[swraithel]

Thanks for the quick reply. You were correct. Removing the glue class via the file.path function did the trick. Thanks for the help!