Hi reddragon,
Things to check:
1) The "Symbol" property of the investment. Make sure it is entered without any leading/trailing white space, and is available on the quote server you're retrieving from.
2) Check that "Retrieve Price" is enabled under the "Internet Retrieve" tab in "Investment Properties...". While there, also double check what quote server you're retrieving this investment from, so you can verify with your web browser that this symbol is available on the quote server you're using.
3) Make sure the price really isn't updating. You can look in the Data Register under the "Prices" data type to view your recorded closing prices. Make sure you're sorting by date. You can also look in the log file after a retrieve using "Help / Logs / Price Retrieve...". If it isn't listed in the log file, then it wasn't retrieved. If it failed to retrieve, it should show this in the log file.
Some related info:
FAQ on price retrieve failurePrice Retrieve Tutorial