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Important Installation Notes and Known Issues

Y Science

Important Installation Notes and Known Issues

1.     The graphics used in the simulations require the monitor to be set to 24-bit true color (millions of colors). Lower color resolutions can be used, but the graphics will not be as sharp. 

2.     When installing any of the virtual labs, you must be logged in as an Administrative User in order for all files and folders to be installed correctly and to have correctly configured file permissions; otherwise, unpredictable results such as hard crashes and other errors can occur during installation and running the labs

3.     The Inorganic and Organic simulations will not run on some Macintosh Macbooks using an Intel-based processor. This is a known issue affecting all Adobe (formerly Macromedia) Director products, however there is some disagreement whether the fault is in Director or OS X. This problem does not appear on Macbook Pros and only on some regular Macbooks. The current solution to this issue is to install the software on Windows running in a virtual machine such as VMware or Parallels. 

4.     Occasionally when installing on the OS X operating system, the system fails to copy over the program icon for aliases created on the desktop. There is no known cause for this. Aliases with the correct icon can be created manually inside the installation directory or by copying the icon on to an already existing alias. 

5.     When installing on the OS X operating system v10.4 (or Tiger), selecting the option to place an alias on the dock causes the dock to be reset to its initial installed state and any dock customization is lost. 

6.     In the directory where the product is installed, the user must always have read/write privileges to that directory and all directories underneath. This is the default state for all Administrative Users (both Mac and PC), and this condition has been set by the installer for Standard Users in OS X as well. However, if users will be logged in as Restricted Users in Windows (such as in a computer lab), then the privileges for the installation directory must be set manually to “Full Access” for Everyone. The installer attempts to set these permissions for Windows installations, but for unknown reasons it is not always successful. In addition, if the system crashes hard while running the product (either on Windows or OS X), these permissions may have to be reset to read/write for everyone. 

7.     The installer does not allow installation and other directory paths to be typed in directly, but all installation paths must be identified or select by browsing to the desired location. When installing on the OS X operating system, browsing to a folder using aliases occasionally causes the installer to spontaneously shutdown. Consequently, it is recommend that aliases be avoided when browsing. There is no known cause for this. 

8.     When installing the product on to the OS X operating system, the user must have read/write permission for the folder into which the simulations will be installed. In the vast majority of cases, the simulations will be installed into the Applications folder, but in order for this to be successful the user must be an administrative user. In some cases, however, the permissions for the Applications folder have been modified by other software installed on the machine, which will prevent the software from being installed in the Applications folder. These permissions can be reset back to their default state using the Repair Disk Permissions function in the Disk Utility program located in the Applications folder. 

9.     QuickTime 6.0 or later is required for the software to run properly. The most recent version of QuickTime can be obtained at 

10.  For unknown reasons, on some machines the QuickTime videos will not play properly if the system QuickTime settings are in their default state. This can be corrected by changing the Video Settings in QuickTime to Normal Mode. 

11.  In our experience, the Y Science servlet engine that runs the Web Connectivity Option is stable for months at a time. However, it does occasionally become unstable, which usually exhibits itself by locking out administrative users or occasionally students. This instability often occurs during heavy use by hundreds of students but can be fixed by completely stopping the TomCat server and then re-starting it. Simply turning off the Y Science servlet is not sufficient.


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