Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I tried to download the Firefox Add on Web Developer and I got an error message and I don't know how to proceed.

  • 1 (رد واحد)
  • 4 have this problem
  • 5 views
  • آخر ردّ كتبه cor-el

more options

Hi I have Firefox 3.0.1 and then it also says Mozilla 5.0. So first I don't even know if this is the right product but I didn't know what else to do.

I'm trying to I tried to download the Firefox Add on Web Developer and I got an error message of: Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/60/web_developer-1.1.9-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details. -203

I've tried it like 3-4 times. I don't know what I'm doing wrong. Any suggestions???

THANK YOU :-) Erin

Hi I have Firefox 3.0.1 and then it also says Mozilla 5.0. So first I don't even know if this is the right product but I didn't know what else to do. I'm trying to I tried to download the Firefox Add on Web Developer and I got an error message of: Firefox could not install the file at http://releases.mozilla.org/pub/mozilla.org/addons/60/web_developer-1.1.9-fx+sm.xpi because: Unexpected installation error Review the Error Console log for more details. -203 I've tried it like 3-4 times. I don't know what I'm doing wrong. Any suggestions??? THANK YOU :-) Erin

All Replies (1)

more options