Interesting bug

Exception is from Adobe's fdb tool (debugger). Tracked as http://youtrack.jetbrains.net/issue/IDEA-54587
The reason of runtime error ('class not found') should be investigated. Probably adding -static-rsls=true as     Additional compiler options to File | Project Structure | Modules |     <your module> | Flex Compiler Settings will help. To find the cause please give     more details:
- What Flex SDK do you use
- How many modules or facets do you have
- Do you get warning about 'factoryClass' from compiler
- Please attach full content of Messages tool window after Build |     Rebuild Project. You can use 'Export to text file' action on its     left side to copy/paste it.

Hello.
Flex:

<name>Flex 4.1</name>
<version>4.1.0</version>
<build>16076</build>

"c:\program files\jetbrains\intellij idea 10.0.1\jre\jre\bin\java.exe" "-Dapplication.home=C:\Documents and Settings\name\Desktop\flash projects\FLEX 4" -Xmx384m -Dsun.io.useCanonCaches=false -Duser.language=en -Duser.region=en -Xmx512m -classpath "C:\Program Files\JetBrains\IntelliJ IDEA 10.0.1\plugins\flex\lib\idea-fdb-4.0.0.14159-fix.jar;C:\Documents and Settings\name\Desktop\flash projects\FLEX 4\lib\fdb.jar" flex.tools.debugger.cli.DebugCLI
Adobe fdb (Flash Player Debugger) [build 16076]
Copyright (c) 2004-2007 Adobe, Inc. All rights reserved.
Waiting for Player to connect
Player connected; session starting.
[SWF] C:\Documents and Settings\name\Desktop\flash projects\SVN\shogun\out\production\shogun\Shogun.swf - 1,919,219 bytes after decompression
[Fault] exception, information=VerifyError: Error #1014: Class mx.core::BitmapAsset could not be found.
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
     at java.util.ArrayList.RangeCheck(ArrayList.java:547)
     at java.util.ArrayList.get(ArrayList.java:322)
     at flash.tools.debugger.concrete.DManager.getFrame(DManager.java:665)
     at flash.tools.debugger.concrete.PlayerSession.pullUpActivationObjectVariables(PlayerSession.java:1075)
     at flash.tools.debugger.concrete.PlayerSession.requestFrame(PlayerSession.java:1053)
     at flash.tools.debugger.concrete.PlayerSession.getValue(PlayerSession.java:1168)
     at flex.tools.debugger.cli.ExpressionContext.memberNamed(ExpressionContext.java:430)
     at flex.tools.debugger.cli.ExpressionContext.locateParentForNamed(ExpressionContext.java:532)
     at flex.tools.debugger.cli.ExpressionContext.determineContext(ExpressionContext.java:482)
     at flex.tools.debugger.cli.ExpressionContext.resolveToVariable(ExpressionContext.java:342)
     at flex.tools.debugger.cli.ExpressionContext.lookup(ExpressionContext.java:161)
     at flash.tools.debugger.expression.DebuggerEvaluator.evaluate(DebuggerEvaluator.java:160)
     at macromedia.asc.parser.ThisExpressionNode.evaluate(ThisExpressionNode.java:34)
     at flash.tools.debugger.expression.DebuggerEvaluator.evaluate(DebuggerEvaluator.java:1001)
     at macromedia.asc.parser.ListNode.evaluate(ListNode.java:44)
     at flash.tools.debugger.expression.DebuggerEvaluator.evaluate(DebuggerEvaluator.java:1001)
     at macromedia.asc.parser.ListNode.evaluate(ListNode.java:44)
     at flash.tools.debugger.expression.DebuggerEvaluator.evaluate(DebuggerEvaluator.java:1035)
     at macromedia.asc.parser.ExpressionStatementNode.evaluate(ExpressionStatementNode.java:50)
     at flash.tools.debugger.expression.DebuggerEvaluator.evaluate(DebuggerEvaluator.java:1276)
     at macromedia.asc.parser.ProgramNode.evaluate(ProgramNode.java:80)
     at flash.tools.debugger.expression.DebuggerExpression.evaluate(DebuggerExpression.java:105)
     at flex.tools.debugger.cli.ExpressionCache.evaluate(ExpressionCache.java:104)
     at flex.tools.debugger.cli.DebugCLI.evalExpression(DebugCLI.java:3639)
     at flex.tools.debugger.cli.DebugCLI.evalExpression(DebugCLI.java:3631)
     at flex.tools.debugger.cli.DebugCLI.doPrint(DebugCLI.java:3557)
     at flex.tools.debugger.cli.DebugCLI.processLine(DebugCLI.java:6506)
     at flex.tools.debugger.cli.DebugCLI.process(DebugCLI.java:725)
     at flex.tools.debugger.cli.DebugCLI.execute(DebugCLI.java:567)
     at flex.tools.debugger.cli.DebugCLI.main(DebugCLI.java:370)

<flex-config xmlns="http://www.adobe.com/2006/flex-config">
  <target-player>10.1.0</target-player>
  <compiler>
    <debug>true</debug>
    <source-path>
      <path-element>src</path-element>
    </source-path>
  </compiler>
  <file-specs>
    <path-element>src/Main.as</path-element>
  </file-specs>
  <output>C:/Documents and Settings/name/Desktop/flash projects/SVN/shogun/out/production/shogun/Shogun.swf</output>
</flex-config>

Thank you,
I guess you have compiler warning about 'factoryClass' in Messages tool window after compilation. To keep tool window open after compilation make sure that 'Hide warnings' button is not pressed on its left side. So your application fails to load runtime shared libraries. You should either add -static-rsls=true additional compiler option or fix your code.

Is Messages window the one with console and debug stuff ?
If not than i dunno how to open it, because its disabled in Window -> Tool Windows menu.

I'm sure there is no problem in my code, i compile and run it under Flashdevelop and it works.

Probably flash develop links runtime shared libraries statically by default. Flash Builder does such.
Messages tool window opens when you compile your project in IDEA. After compilation it automatically closes if there's no errors and no warnings or 'Hide warnings' button is pressed. So you need to unpress this button before compilation ends. To force long compilation you can click Build | Rebuild Project.

OK.

Thank you a lot !

Adding -static-rsls=true fixed this error.