View source for NSISdl deletes file(s) when offline

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; Issue
: When the [[NSISdl plugin]] must download a file, and there is no internet connection, the target file gets deleted if it already exists.

; Cause
: NSISdl deletes the target file if an error occurs, to prevent leaving any corrupted files.

; Solution
: Use the [[Dialer plug-in]] to check the internet connection.

; Recommendation
: You should download the file to a temporary directory (such as [[Reference/$PLUGINSDIR|$PLUGINSDIR]] or [[Reference/$TEMP|$TEMP]]), and as soon as you've made sure that you've got the right file, and there were no errors, then you should copy it to its destination.

[[Category:Minor Issues]]