Now Available: 4.1 DHTML Recommended release
We are proud to announce the release of OpenLaszlo 4.1.
OpenLaszlo 4.1 is a major release bringing full support for both the DHTML/Ajax and the SWF/Flash platforms. It also includes over 800 bug fixes and a significantly improved documentation suite.
OpenLaszlo 4.1 has been fully-qualified across the following browser/platform combinations: Safari3/OSX, Firefox2/OSX, Internet Explorer 7/WinXP, Firefox 2/WinXP, and Firefox 2/Linux. We have tested the full suite of demos, samplers, and example applications with the requirement that, when possible, DHTML applications behave the same as their SWF counterparts.
OpenLaszlo 4.1 is now the recommended release for all developers on all platforms, and current users of OL 3.x and 4.0 should investigate upgrading to this new release.
Preliminary support for SWF9 is included in this release but has not been enabled in the developer console. If you want to try this new functionality, you can find more information on using the SWF9 support in the Release Notes (link to come).
For every release, we rely on the OpenLaszlo community to help ensure the quality of the platform release and to determine its future direction. To propose or participate in discussion of new features, see the Wiki. We encourage you to report any problems, and to make suggestions for enhancements, through our JIRA bug tracking system. We'd also like to hear from you on the mailing lists and in the forums.
Upgrading to OpenLaszlo 4.1
There are some changes to the OpenLaszlo release that may require changes to your code to work under release 4.1. Complete details and additional information on the differences between the SWF and DHTML runtimes can be found on the OpenLaszlo Wiki ( http://wiki.openlaszlo.org/Runtime_Differences ).
The major change is that user classes are no longer defined as part of the global namespace. This gives OpenLaszlo better interoperability with other frameworks. In your application, user classes defined as:
<class name="Foo" .../>
<new foo(...)
will need to be changed to:
new lz.foo (...)
A script has been posted by Sebastian Wagner to help convert user classes. It can be found here: http://code.google.com/p/laszlo4converter/.
In addition, warnings may now appear if you are using deprecated syntax in your application. OpenLaszlo 4.1 includes a perl conversion script (convert_laszlo.pl) to help mitigate these warnings.
July 1st, 2008 at 11:48 am
[...] 4.1 is announced and publicly available for download at download.openlaszlo.org. This is a very significant new [...]
July 1st, 2008 at 12:20 pm
[...] wurde die Version 4.1 von OpenLaszlo veröffentlicht. Mit dieser Version wird nun auch die DHTML-Ausgabe endlich final [...]
July 2nd, 2008 at 4:24 am
OpenLaszlo 4.1 Released…
[...]We are proud to announce the release of OpenLaszlo 4.1.

OpenLaszlo 4.1 is a major release bringing full support for both the DHTML/Ajax and the SWF/Flash platforms. It also includes over 800 bug fixes and a significantly impro…
July 2nd, 2008 at 5:40 am
Excellent! Congratulations to the OpenLaszlo team! Countless hours of work went into the DHTML runtime. It’s even better news that work on the documentation is quickly advancing.
July 2nd, 2008 at 9:34 am
We’ve been waiting for DHTML runtime for a long time, and now it finally arrives. Awesome!
July 2nd, 2008 at 5:03 pm
[...] was really happy when I scanned through my RSS reader today and discovered that OpenLaszlo 4.1 has finally been released! Laszlo first announced the work on the DHTML runtime in March 2006. I remembed when I first tested [...]
July 3rd, 2008 at 10:19 am
[...] when they went meta, and allowed you to general Ajax applications as well as SWF ones. The 4.1 release is a big one, as it brings full parity to the Ajax side of the house: OpenLaszlo 4.1 is a major [...]
July 3rd, 2008 at 4:07 pm
[...] when they went meta, and allowed you to general Ajax applications as well as SWF ones. The 4.1 release is a big one, as it brings full parity to the Ajax side of the house: OpenLaszlo 4.1 is a major [...]
July 4th, 2008 at 6:55 am
[...] Pour en savoir plus et télécharger l’application, rendez-vous sur cette page correspondant à l’annonce officielle. [...]
July 4th, 2008 at 8:29 am
[...] Antun Karlovac and Raju Bitter report that the 4.1 version of OpenLaszlo has finally been released and can now generate DHTML in addition to the already existing SWF output format. The project [...]
July 5th, 2008 at 8:17 am
[...] L’article sur le blog OpenLaszlo [...]
July 6th, 2008 at 2:10 am
[...] when they went meta, and allowed you to general Ajax applications as well as SWF ones. The 4.1 release is a big one, as it brings full parity to the Ajax side of the house: OpenLaszlo 4.1 is a major [...]
July 7th, 2008 at 1:35 pm
[...] completely missed this but it looks like OpenLaszlo 4.1 has been released and it includes full support for DHTML/Ajax as well as SWF/Flash. In addition there are a number of [...]
October 5th, 2008 at 8:45 pm
[...] - bookmarked by 1 members originally found by alphabet on 2008-09-17 Now Available: 4.1 DHTML Recommended release http://weblog.openlaszlo.org/archives/2008/06/now-available-41-dhtml-recommended-release/ - [...]
May 15th, 2010 at 1:27 pm
Thanks, this blog aided me somewhat in solving some issues with the latest release candidate, Why do they always leave out vital documentation when they upgrade? It may be minor to them but not for us! I’m sure i’m not alone either.