295115 - Greasemonkey 0.3.3: "Could not download user script"

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[Steffen Wilberg]

When I try to install a greasemonkey user script, it displays an alert box with
this error:

"Could not download user script

[Exception..."Cannot modify properties of a WrappedNative" nsresult:"0x80570034
(NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN)" location: "JS frame ::
chrome://greasemonkey/content/greasemonkey.js :: anonymous :: line 251" data: no]"

Steps to reproduce:
1. Install Greasemonkey 3.3 and restart Firefox (http://greasemonkey.mozdev.org/)
2. Right-click on of the scripts on that page and select "Install User Script...".

Actual Results:
The above mentioned error is displayed in an alert box.
The download manager shows the download of the script as "Starting...".
The js console displays:
Warning: assignment to undeclared variable folder
Source File: chrome://mozapps/content/downloads/downloads.js
Line: 745
Error: doc has no properties
Source File: chrome://greasemonkey/content/greasemonkey.js
Line: 34

Judging from the error, this is a regression from bug 281988.

Comment 1

[Steffen Wilberg]

I'm using a brand-new Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b2)
Gecko/20050522 Firefox/1.0+.

Comment 2

[Caleb]

A few minutes ago I've installed 0.3.3 and it gave me a bunch of problems...
Then I've installed 0.3.4 and it worked perfectly.

Can you try installing the 0.3.4 version from here and reproducing again ?
http://ftp.iasi.roedu.net/mirrors/mozdev.org/greasemonkey/

Comment 3

[Sven Grull]

At least for 0.33 I had to submit the changes from
http://mozdev.org/bugs/show_bug.cgi?id=10173
to greasemonkey.js in order to get greasemonkey running.

Comment 4

[Steffen Wilberg]

Greasemonkey 0.3.4 works fine indeed. Looks like this was an error on the
extension's side. --> invalid.

Comment 5

[Boris Zbarsky [:bzbarsky]]

In case anyone cares, the extension was setting a nonexistent property on an
nsIDownload wrapped native, and this is not allowed for non-DOM wrapped natives
(hence the exception).