I'm trying to file - but I keep getting the message "1040/1040SR Wks: Charitable contributions: Charitable contributions has an unacceptable value." I have 0.00.

There is a known issue that produces the message, Charitable contributions has an unacceptable value."  Try these steps:

First, clear your cache.

Your browser stores recently visited webpages as temporary files in a cache, which enables the pages to load more quickly when revisited.

However, a full or corrupted cache can cause problems in TurboTax, so sometimes you need to clear your cache (that is, remove these temporary files).

Here are the official instructions for the most popular browsers:

• Google Chrome
• Mozilla Firefox
• Microsoft Internet Explorer 11 (use the drop-down on the upper right corner of that page for earlier versions)
• Microsoft Edge

Apple's official support site doesn't appear to contain instructions for clearing the cache in Safari. Your best bet is to search the Internet for clear Safari cache or similar search terms.

If your cache isn't the issue, it might be best to delete it and start again.

Next, sign back into TurboTax and try the following:

1. Go to the Deductions and Credits tab
2. Select Review/Edit
3. To the right of Standard Deduction, click Edit
4. ​​Click OK, Sounds Good when you see it.
5. Click Wrap Up Tax Breaks
6. Click Continue

The Charitable Donations question should either not appear at all, or the amount should be zero.  

If this didn't work, and you still experience the same error, try deleting a charitable donation form floating in the background:

1. Go to Tax Tools on the left panel of the screen
2. Click on Tools 
3. Click on Delete a form
4. If you see a form with a charitable donation on it, delete it and take steps 1-5 again. 

CARES ACT 

This charitable contribution issue is due to a new provision in the CARES Act.   Previously, charitable contributions could only be deducted if taxpayers itemized their deductions. However, taxpayers who don't itemize deductions may take a charitable deduction of up to $300 for cash contributions made in 2020 to qualifying organizations.