Modeler fails badly in IE8

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Start Activiti 5.5 Demo
2. Open Activiti Modeler (signavio) in IE8 (obviously on windows, I'm using 
WIndows 7 64 bit, Enterprise)
3. Click on an ootb process
4. Click on the thumbnail for the process

What is the expected output? 
Expect to be able to edit the process or to receive a warning indicating the 
browser is not supported.

What do you see instead?
A popup window is displayed with a tomcat exception.

The URL for the popup window: 
http://localhost:8080/p/publisher/C:;Users;dmadmin;Downloads;activiti-5.5;activi
ti-5.5;apps;apache-tomcat-6.0.32;bin;..;..;..;workspace;activiti-modeler-example
s;EasyBugFilingProcess;EasyBugFilingProcess.signavio.xml

With the following message:
HTTP Status 404 - 
/p/publisher/C:;Users;dmadmin;Downloads;activiti-5.5;activiti-5.5;apps;apache-to
mcat-6.0.32;bin;..;..;..;workspace;activiti-modeler-examples;EasyBugFilingProces
s;EasyBugFilingProcess.signavio.xml

--------------------------------------------------------------------------------

type Status report

message 
/p/publisher/C:;Users;dmadmin;Downloads;activiti-5.5;activiti-5.5;apps;apache-to
mcat-6.0.32;bin;..;..;..;workspace;activiti-modeler-examples;EasyBugFilingProces
s;EasyBugFilingProcess.signavio.xml

description The requested resource 
(/p/publisher/C:;Users;dmadmin;Downloads;activiti-5.5;activiti-5.5;apps;apache-t
omcat-6.0.32;bin;..;..;..;workspace;activiti-modeler-examples;EasyBugFilingProce
ss;EasyBugFilingProcess.signavio.xml) is not available.

--------------------------------------------------------------------------------

Apache Tomcat/6.0.32

What version of the product are you using? 
Activiti 5.5

On what operating system?
Windows 7 64bit, Enterprise

Please provide any additional information below.

Original issue reported on code.google.com by binduwav...@gmail.com on 6 Jun 2011 at 2:44

[GoogleCodeExporter]

It is technically not possible to support IE8.

Original comment by nicolas....@googlemail.com on 27 Jun 2011 at 10:56

• Changed state: WontFix

[GoogleCodeExporter]

You have other places where you display a warning dialog rather than a
nasty container error. How about doing that in this case?

Original comment by binduwav...@gmail.com on 27 Jun 2011 at 1:40

[GoogleCodeExporter]

Hello Nicolas, could you tell me why it is not possible to support IE8? 

Original comment by giusdil...@gmail.com on 5 Jul 2011 at 10:32

[GoogleCodeExporter]

Are there any libraries used that are not supported in IE version <=8??

Original comment by giusdil...@gmail.com on 5 Jul 2011 at 1:44