Are you using a Firefox extension to make the screenshots?

If this is the case then can you tell which extension you are using?

I don't think it is an extension. Or at least it is not a third-party extension because I can't find it the extension list. I am pretty sure it is a tool come with Firefox. Maybe only available in Chinese version? the icon is right beside the search box. You can do a square clip or clip the whole webpage. I attached the icon picture. Thank you!

Does hovering that icon show a tooltip?

I have been using this tool for long time and it works good before. It is just a few weeks ago when this problem comes. I attached another picture to explain. Thank you for your help!

Above picture shows a edit window after screenshot. The arrow points a "save" function. it will pop up the file directory to save. Then to confirm. In the past when it works normal, I should be able to find the save picture in that folder. But now, the file will not be in that folder. That's the problem! Thank you!

Can you attach an extension list?

• Help > Troubleshooting Information

• https://support.mozilla.org/kb/Using+the+Troubleshooting+Information+page

I have this same issue and it also happens to the add-ons "Awesome Screenshot", "Screen Grab" and other screenshot extensions that I have used. I even tried to reset firefox and complete a fresh install and the same thing happens. Not sure what is going on. Everything was working fine before but when I got back and it was updated the same symptoms appeared just like the one in this post. I tried to search around for answers but could not find anything that would address this issue in any way

应用程序概要

       名称
       Firefox

       版本
       18.0

       用户代理
       Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:18.0) Gecko/20100101 Firefox/18.0

       构建配置

         about:buildconfig

 扩展

       名称

       版本

       已启用

       ID

       Clearly
       7.3346.272.999
       true
       readable@evernote.com

       Easy YouTube Video Downloader
       6.7
       true
       {c0c9a2c7-2e5c-4447-bc53-97718bc91e1b}

       LastPass
       2.0.0
       true
       support@lastpass.com

       NetVideoHunter
       1.9.5
       true
       netvideohunter@netvideohunter.com

       Places Maintenance
       1.3
       true
       places-maintenance@bonardo.net

       Pocket
       3.0.1
       true
       isreaditlater@ideashower.com

       Test Pilot
       1.2.2
       true
       testpilot@labs.mozilla.com

       Youdao Word Capturer For Firefox
       1.0
       true
       dict@www.youdao.com

       分享工具条
       0.15
       true
       share_all_cn@mozillaonline.com

       附加组件管理器
       0.6.21
       true
       cpmanager@mozillaonline.com

       火狐捷径
       0.12
       true
       quicklaunch@mozillaonline.com

       火狐应用中心
       5.1.8
       true
       livemargins@mozillaonline.com

       火狐主页
       0.9.7
       true
       cehomepage@mozillaonline.com

       Adobe Acrobat - Create PDF
       1.2
       false
       web2pdfextension@web2pdf.adobedotcom

 修改过的重要首选项

     名称

     值

       accessibility.typeaheadfind.flashBar
       0

       browser.cache.disk.capacity
       358400

       browser.cache.disk.smart_size_cached_value
       358400

       browser.cache.disk.smart_size.first_run
       false

       browser.cache.disk.smart_size.use_old_max
       false

       browser.places.smartBookmarksVersion
       4

       browser.startup.homepage
       http://i.firefoxchina.cn/

       browser.startup.homepage_override.buildID
       20121231071231

       browser.startup.homepage_override.mstone
       18.0

       dom.mozApps.used
       true

       extensions.lastAppVersion
       18.0

       gfx.blacklist.webgl.msaa
       4

       network.cookie.prefsMigrated
       true

       places.database.lastMaintenance
       1357910149

       places.history.expiration.transient_current_max_pages
       104858

       print.macosx.pagesetup-2
       PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPCFET0NUWVBFIHBsaXN0IFBVQkxJQyAiLS8vQXBwbGUvL0RURCBQTElTVCAxLjAvL0VO

       privacy.donottrackheader.enabled
       true

       privacy.sanitize.migrateFx3Prefs
       true

       security.warn_viewing_mixed
       false

 图像

       GPU 加速窗口
       1/1 OpenGL

       WebGL 渲染器
       Intel Inc. -- Intel HD Graphics 4000 OpenGL Engine

       厂商 ID
       0x8086

       设备 ID
       0x 166

       AzureCanvasBackend
       quartz

       AzureContentBackend
       none

       AzureFallbackCanvasBackend
       none

 JavaScript

       增量式垃圾收集器
       true

 可用性

       已激活
       false

       阻止辅助功能
       0

 库版本

       预计最低版本

       正在使用版本

       NSPR
       4.9.4
       4.9.4

       NSS
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC

       NSSSMIME
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC

       NSSSSL
       3.14.1.0 Basic ECC
       3.14.1.0 Basic ECC

       NSSUTIL
       3.14.1.0
       3.14.1.0

Had the same problem and fixed it.... sort of..... This is definitely a firefox issue related to the most recent update. I downgraded to the older version and I was finally able to save screenshots again. You can get the old version here: http://mac.oldapps.com/firefox.php

They say using an older version poses security risks so hopefully Firefox issues an update that corrects this issue right away!

It's interesting that the problem is fixed after upgrade to the latest version 19.0 beta. So it looks is the problem of firefox. To the old version, firefox has an issue to open the pdf format online. While from 19.0, it is also fixed. Now we can view the pdf document online directly. It is so good!