This problem is most likely caused by a lack of permissions. The DAQ Assistant is built from Measurement & Automation Explorer (MAX), and the user needs permission to access MAX's files.
Complete the following steps to set up permission for the MAX\Data directory:
1) Browse to the C:\Program Files\National Instruments directory.
2) Right-click the MAX folder and select Properties.
3) Click the Security tab, and click the Add button. Type in the user name and click OK.
4) Give the user Read & Execute, List Folder Contents, and Read permissions.
5) Click Apply and then OK.
If the problem persists, try adding permissions for other folders in the MAX directory.
If you have several different users and want all users to use the DAQ Assistant, repeat the
above steps but type everyone for the user name.
The above steps are written for Windows XP. For previous Windows versions, the procedure will be very similar but may not be exactly the same.