ASCII Import data error: Mutating a value collection derived from a dictionary is not allowed

Author: bfbryan

Creation Date: 7/13/2009 8:36 PM

Wealth Lab » Wealth-Lab Developer/Pro » ASCII Import data error: Mutating a value collection derived from a dictionary is not allowed

bfbryan

7/13/2009 8:36 PM

I imported some futures historical data but I keep getting an error "Mutating a value collection derived from a dictionary is not allowed"

Eugene

7/14/2009 1:23 AM

Unfortunately, this is a WL 5.4 issue that affects the ASCII provider. Please create a support ticket.

I am using just the Fidelity trial and believe its not my place to put in a ticket for something I didn't pay for. Unfortunately I am unlikey to become a Fido active trader and therefore I would need to pay for WL outright but without the ability to properly upload prices it makes me question the value of the product. Any recommendations?

Eugene

7/14/2009 11:34 AM

Unfortunately, paying for WL5 is not an option in U.S.

The problem you're having has something to do with having open interest and/or custom fields defined in your ASCII data, and then compressing into a higher bar scale. Here's a workaround. When creating the historical futures DataSet, instead of adding open interest and/or custom field data, define these columns as Filler. Of course, the data won't be accessible but you'll get rid of the error.