Mine is rejected too, WITHOUT an error code, simply the following generic error message: 

One or more entries in your tax return require correction. the data entered is either invalid, or mandatory information is missing. if you are unable to resolve the issues, please contact your software provider.

It is NOT error 95365, though I do have a T3, but I am the 100% owner.

@shz Please refer to your previous year's successfully filed tax return to confirm personal information and SIN entered. Or refer to your SIN card or letter issued by Service Canada to ensure the names entered match the information on your current tax return. If still unsuccessful, please contact CRA at 1-800-959-8281 for assistance.