This page lists the most frequent issues reported by users of the this web site, along with their solutions.

• When I try to log in, I get a red "Invalid Login." message.

  Your eName/ePassword were rejected by the University eID system. Check your CAPS LOCK key, since ePasswords are case-sensitive. Try logging in to another site that uses your eID, such as RAMweb. Use the eID web site to configure your eName and ePassword.

• When I try to run the compatibility test, I get a dialog asking what I want to do with a file called "compat_test.jnlp".

  The dialog should give you two options - Open or Save. The dialogs may differ depending on what browser you are using.

  Internet Explorer Users

  Click Open, and the compatibility test should run. If you don't have an Open button in the dialog, that means Java is not installed. Download the latest version of Java for your computer.

  Firefox Users

  Select the Open With option, and make sure Java (TM) Web Start Launcher is selected in the dropdown list, and click OK. If you don't see Java (TM) Web Start Launcher in the dropdown list, that means Java is not installed. Download the latest version of Java for your computer.

  Users of other browsers

  Choose the option that allows you to run or open the file, rather than saving it. The application that should be used to open the file will be called Java (TM) Web Start Launcher or Java Web Start or simply javaws. If you cannot find any of these applications, it may mean Java is not installed. Download the latest version of Java for your computer.

• When I try to run the compatibility test, I get a message that reads "jnlp version and launch file: 1.5+ only version 1.0 is supported with this version."

  You have an old version of Java installed. Download the latest version of Java for your computer.

• The compatibility test runs, but the Screen Size test fails.

  To effectively run homework assignments and review exams, you need a screen resolution of at least 800 x 600. For Windows, use the Display control panel to adjust your screen size to be 800 x 600 or larger. Other operating systems have different methods of adjusting screen size - consult your online help or manual.

• The compatibility test runs, but the Secure Networking test fails.

  This is usually a firewall issue. Most cable modems or DSL modems include built-in firewalls, and there are many software firewalls that you can install on PCs (McAfee, eTrust, Encore, Symantec, and many others). In addition, Windows XP includes a built-in software firewall.
  The Homework and Review Exam applications need to communicate with the Math Department server on a particular TCP port that some firewalls block by default. The detailed configuration that is required is:
    Server: online.math.colostate.edu
    TCP Port: 28090
  Check the documentation that came with your particular firewall for information on configuring access to this port, or forward this information to the person who configures your firewall settings.

• I use a Macintosh, and I can't view the video lessons.

  First make sure you have Windows Media Player for Macintosh and Flip4Mac installed. They can be downloaded using the buttons below.
       
  A document that describes how to configure Windows Media for Macintosh can be found here (in Adobe PDF format).

• I get a "Navigation was canceled" message when I try to access an instructional video clip, example or solution for sample problems.

  There is a bug in the Internet Explorer web browser when it runs on specific operating systems. You can find a full description of the bug on the Microsoft support page http://support.microsoft.com/kb/967941.
  
  How do you get around this problem? The easiest solution is to use a different web browser such as Firefox. You can find a free download for Firefox on the Mozilla website http://www.mozilla.com.