I would like to use Vaadin 7 with Liferay 6.2. I downloaded Vaadin Control Panel from marketplace and added .war to deploy folder.
Path to .war of Vaadin Control Panel:
/liferay-portal-6.2-ce-ga2/deploy/liferay-vaadin-plugin-web-1.1.0.0.war
Then I opened Liferay Control Panel and tried to activate Vaadin Control Panel in Apps->Utility and got error message: "Portlet is temporarily unavailable." In log message I got error:
com.liferay.portal.kernel.deploy.auto.AutoDeployException: com.liferay.portal.kernel.deploy.auto.AutoDeployException: liferay-vaadin-plugin-web-1.1.0.0.war does not support this version of Liferay
In log I found these error messages:
101 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:204] Processing Vaadin Control Panel.lpkg
105 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][LiferayPackageAutoDeployListener:51] Extracting Liferay package for /liferay-portal-6.2-ce-ga2/deploy/Vaadin Control Panel.lpkg
107 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][LiferayPackageAutoDeployer:89] Extracting liferay-vaadin-plugin-web-1.1.0.0.war from Vaadin Control Panel.lpkg
382 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][LiferayPackageAutoDeployer:89] Extracting liferay-marketplace.properties from Vaadin Control Panel.lpkg
383 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][LiferayPackageAutoDeployListener:57] Liferay package for /liferay-portal-6.2-ce-ga2/deploy/Vaadin Control Panel.lpkg extracted successfully. Deployment will start in a few seconds.
Loading file:/liferay-portal-6.2-ce-ga2/tomcat-7.0.42/temp/1-kaleo-web/WEB-INF/classes/service.properties
436 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:204] Processing liferay-vaadin-plugin-web-1.1.0.0.war
437 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][PortletAutoDeployListener:79] Copying portlets for /liferay-portal-6.2-ce-ga2/deploy/liferay-vaadin-plugin-web-1.1.0.0.war
449 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][BaseDeployer:859] Deploying liferay-vaadin-plugin-web-1.1.0.0.war
453 ERROR [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:220] com.liferay.portal.kernel.deploy.auto.AutoDeployException: com.liferay.portal.kernel.deploy.auto.AutoDeployException: liferay-vaadin-plugin-web-1.1.0.0.war does not support this version of Liferay
com.liferay.portal.kernel.deploy.auto.AutoDeployException: com.liferay.portal.kernel.deploy.auto.AutoDeployException: liferay-vaadin-plugin-web-1.1.0.0.war does not support this version of Liferay
at com.liferay.portal.tools.deploy.BaseDeployer.autoDeploy(BaseDeployer.java:212)
at com.liferay.portal.deploy.auto.ThreadSafeAutoDeployer.autoDeploy(ThreadSafeAutoDeployer.java:36)
at com.liferay.portal.deploy.auto.PortletAutoDeployListener.deploy(PortletAutoDeployListener.java:88)
at com.liferay.portal.kernel.deploy.auto.AutoDeployDir.deploy(AutoDeployDir.java:50)
at com.liferay.portal.kernel.deploy.auto.AutoDeployDir.processFile(AutoDeployDir.java:211)
at com.liferay.portal.kernel.deploy.auto.AutoDeployDir.scanDirectory(AutoDeployDir.java:275)
at com.liferay.portal.kernel.deploy.auto.AutoDeployScanner.run(AutoDeployScanner.java:58)
Caused by: com.liferay.portal.kernel.deploy.auto.AutoDeployException: liferay-vaadin-plugin-web-1.1.0.0.war does not support this version of Liferay
at com.liferay.portal.tools.deploy.BaseDeployer.deployFile(BaseDeployer.java:898)
at com.liferay.portal.tools.deploy.BaseDeployer.autoDeploy(BaseDeployer.java:209)
... 6 more
455 INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:224] Add liferay-vaadin-plugin-web-1.1.0.0.war to the blacklist
How do you use latest Vaadin version with latest version Liferay?
The key information is
liferay-vaadin-plugin-web-1.1.0.0.war does not support this version of Liferay
e.g. the authors probably have created/tested this plugin on 6.1 (likely), or got the declaration of compatible versions wrong (unlikely). In fact, if I look at marketplace, the plugin indeed declares compatibility with 6.1, not 6.2. However, the marketplace app links to the sourcecode and the README file indicates that it might have already been ported to 6.2 - just not released on marketplace. You might want to check compiling it yourself.
As to your closing question of how to use the latest Vaadin version with Liferay, you might want to check this article