Creating SSIS Package SQL Server Agent Job Without Sysadmin Rights

Hi

I have a problem i receive the following error message when i try to add an new step into a SQL Server Agent job :

Failed to retrieve data for this request. (Microsoft.SqlServer.SmoEnum)
Additional information:
An exception occured while executing a Transact-SQL statement or batch.
(Microsoft.SqlServer.ConnectionInfo)
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction.(Microsoft SQL Server, Error: 3930)


This error pops up right after i change the type of the step to "SQL Server Intergration Services Package"

I have made the following configurations:

The user group (windows group) that the user belongs has the following roles in msdb :

db_dtsadmin
db_dtsltuser
db_dtsoperator
SQLAgentOperatorRole
SQLAgentReaderRole
SQLAgentUserRole

i have made a proxy to sql server agent which has the following subsystems :

"SQL Server Integration Services Provider" the proxy is tied to the same login which has those SQLagent and dts roles in msdb database.

Im using windows authentication and the user that logs into the sql server is in the same group that i have set all of the rights.

Ps. Clearly im missing some role or right somewhere because as soon as i give the group sysadmin role then all the users in that group can create SSIS steps in the agent.

Ps. Ps. I have been living under the impression that i dont have to give sysadmin rights to people that create ssis packages and schedule then with the agent.