when I execute from sa 11 build 2960 interactive sql: START EXTERNAL ENVIRONMENT CLR; I get

-------------------------------
         SQL ERROR
-------------------------------
Could not exec statement
External environment 'CLR' not found
SQLCODE=-, ODBC 3 State="HY000"
Line 1, column 28
----------------------------------
START EXTERNAL ENVIRONMENT CLR
----------------------------------

I do have C:\Program Files\SQL Anywhere 11\Bin64 and C:\Program Files\SQL Anywhere 11\Bin32 the required assembly files: dbextclr11.exe,dbextenv11.dll, dbexternc11.exe, dbextf.dll

what should I do to enable clr integration so I can use clr dll functions and methods in my stored proc?

btw - I saw the article in doc exchange for sa 12 for testing if eternal env but not for sa 11 - when I tried to execute by doublicking in windows 8 explorer the dbextclr11.exe - I get a DOS windows then

[Window Title]
iAnywhere.SAClrClassLoader

[Main Instruction]
Do you want to automatically send more information about unsolved problems?

[Content]
Sending information can help Microsoft create solutions.  To see what types of information Windows can send, read our privacy statement online.

[Yes, send more information automatically (recommended)] [No, ask me each time]

If I go debug, I get

System.IndexOutOfRangeException was unhandled
  Message="Index was outside the bounds of the array."
  Source="dbextclr11"
  StackTrace:
       at iAnywhere.SAClrMain.Main(String[] args)
  InnerException: 

I also tried the windows 8 compatibility wizard,Still get the same error

the file version of dbextclr11.exe is 11.0.1.29602, date modified 2013-13-25 2:03Pm Size 49.8KB