How do I debug or set breakpoint to SSIS package for FTP task
===

I have one SSIS package i was deployed on server now i need to debug that `SSIS package`  

so i have downloaded that on my local machine but
>I'm not able to set breakpoints not on any step :( 

nor able to compile or run why so getting error  like 

    Error : Failed to decrypt protected XML node "DTS:Property" with 
    error 0x8009000B "Key 
    not valid for use in specified state.". 
    You may not be authorized to access this   information. This error occurs when there  
    is a cryptographic error. Verify that the 
    correct key is available.  	C:\Users\Job1.dtsx	1	1	

Package protection level sets to : EncryptSensitiveWithUserKey