@Anonymous451 Thanks for sharing it! 

May 4 Still no resolution, aside from submitting numbers that do not match the actual T4 (such as deleting the amount in 16A). Has anyone gotten through to the CRA? Do they have a work around?

Please see this TurboTax Canada FAQ for information on Error Code 90308: CRA system error codes affecting your ability to file 
 

Thank you for your patience and choosing TurboTax.