Evaluation Licenses

If you receive an error message with an evaluation license on any platform, locate the error message below for suggestions on resolving the problem.

License Information Does Not Pass the Checksum Test

Carefully check to make sure you have entered your license information exactly as it appears in your IDL or ENVI license information. Exactly duplicate capitalization, spacing, and the date format as shown on your form.

The license information must not contain leading or trailing spaces. For an example of a correctly formatted evaluation license key, see Evaluation License.

File Already Exists

If you have an existing evaluation license for this product, you will be asked if you want to replace it. Select Yes to overwrite the old license with the new, extended evaluation license.

File Cannot Be Written

You might not have write permissions for the directory or the file to which you are attempting to write. Check the permissions to make sure neither the directory nor any files you are attempting to overwrite are designated as read-only. For more information, see Files Needed for Initialization of the Licensing Program Could Not Be Found.

Permissions Error Message (Linux)

Following is a common error message that may appear while installing IDL or ENVI from a DVD on a Linux system: 

sh /mnt/dvd/idlxx/unix/xinstall.sh
/mnt/dvd/xinstall.sh: 
/mnt/dvd/unix/install/xinstall/xinstall.linux: Permission denied
/mnt/dvd/xinstall.sh: 
/mnt/dvd/unix/install/xinstall/xinstall.linux: Permission denied

This error message usually occurs when the user option (which allows normal users to mount DVDs) is set on the DVD device in /etc/fstab. By default, the user option prevents all users (including root) from executing programs on the DVD, even if the file's execute permission is set. The installation program tries to execute programs directly from the DVD, which causes the installation to fail. Perform the following steps to prevent this error:

  1. Insert the DVD into the DVD drive. The automount will run and display the DVD contents.
  2. Open a terminal window and type the following commands.
         umount /dev/hdc
         mount -o ro -t udf /dev/hdc /media
  3. Now you can proceed with the installation.

The name of the DVD device (in this case, /dev/dvd) and its mount point (/mnt/dvd) may be different on your system. Consult the manpage for the mount command for a more detailed description of the /etc/fstab file and the options used in this procedure.