Software Update: Opera 10.50 Build 3257 Beta

The Opera Desktop team has released a new development version of the Opera web browser. Version 10.50 includes a newer version of Carakan, the JavaScript engine that is part of version 2.5 of the layout engine Presto. This version of Carakan should be a lot faster than its predecessors. The developers recently announced that they will focus on the Windows version first and release the Mac OS X and Linux versions at a later date. This beta can only be downloaded for Windows. The changelog for this release looks like this:


  • Numerous crash fixes (including crashes on sites like and Google Buzz)
  • Numerous general Carakan fixes and improvements
  • Some memory work
  • Fixed Bug CARAKAN-942 (Function.prototype.apply fails for non-Array, non-arguments objects)
  • Fixed Bug CARAKAN-985 (Button directs to wrong URL on
  • Fixed Bug CARAKAN-1003 (No content shown after loggin in at
  • Fixed Bug CARAKAN-1018 (Property caching is broken in combination with special properties)
  • Partial fix to Bug CARAKAN-940 (Ray tracing performance fix)
  • Fixed Bug DFL-935 (Command line not evaluated in local scope with Dragonfly+Carakan)

Opera unit

  • Crash fixes
  • Fixed Bug DSK-277782 (Context Menu missing for Images and Links in Widgets)

Opera Widgets

  • Support for window style (floating/below etc)
  • Various stability improvements
  • Fix for widget not closing when close initiated from decoration button
  • Fixed Bug DSK-279044 (Widget Edit Field Context Menu crashes application after Spellcheck has been enabled)
  • Fixed Bug DSK-277335 (Password manager does not work)
  • Fixed Bug DSK-277563 (Download from untrusted repository: pressing no on warning message makes it impossible to download widget until browser is restarted)
  • Fixed Bug DSK-276592 (wgt mime-type set “Save on hard drive” causes Opera freezes on download dialog)
  • Fixed Bug DSK-278144 (Install unite apps when drag and dropping config.xml)
  • Fixed Bug DSK-278020 (Scrollbars appear when Yandex Traffic widget is docked)
  • Fixed Bug DSK-277775 (Untrusted repository dialog opened many times)
  • Fixed Bug DSK-277450 (widget control buttons don’t change their position if changing widget size by script)
  • Fixed Bug DSK-276622 (Zooming widgets displays scrollbars)
  • Fixed Bug DSK-279010 (Scrollbars do not appear for widgets in application mode)
  • Fixed Bug DSK-271522 (Widget with faulty folder structure is being opened)
  • Fixed Bug DSK-176615 (Downloading widget fails if it’s already in transfers list)
  • Fixed Bug DSK-278555 (Change “untrusted widget” dialog)
  • Fixed Bug DSK-278562 (Download more widgets does not work for widget that is opened by d’n’d of config.xml)

The following downloads are available:
Opera 10.50 build 3257 for Windows (msi)
Opera 10.50 build 3257 for Windows (Classic)

Version number 10.50 build 3257 beta
Release status beta
Operating systems Windows 7, Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008
Website Manufacturer
File sizes 10.70MB – 12.90MB
License type Freeware