If I have a wash sale amount of .3 but the from does not accept this as a valid number, and it does not let me leave it blank. How do I remedy this issue?

If this is your only wash sale, keep in mind that you could leave this cell blank. The IRS does not require you to report amounts under $0.50.

If you do want to adjust it to accurately capture what you received on your statement, then return to Part III of your Capital Gain (Loss) Adjustments Worksheet. Scroll down and follow these steps:

1. Check the box Sale includes a disallowed wash sale loss (code W). Amount (leave blank if all)
2. Click inside the cell for the amount. This should immediately give you a + to the left of the cell. 
3. Click the + to enter your details.

Alternatively, if nothing is in Part III for the wash sale, use Part II for Manual Adjustments. Enter Code W and enter the amount in the same manner as the steps above. 

I have tested this and it does take amounts less than $0.50.

See the screenshots:

Thank you for the information. I have tried the suggestions and have not been able to resolve the issue. I tried to enter "W" in the manual portion and the "X" in the box in part III still remained. This is the only error keeping me from e-filing.  Anyone with the same problem, please send help!!  Thanks in  advance.

Since the IRS allows you to round to the nearest dollar, amounts under $0.50 could be considered as zero.

If TT is not allowing you to enter zero for the adjustment, then I'd just not enter the adjustment at all.  

I can't give you legal advice, but if I could, I would absolutely guarantee you that if you don't intend fraud, the IRS will not send a SWAT team to your house to find out why you didn't report a 30-cent adjustment.