When printing, nothing is sent to the printer

When I run GDS 2000, I get the following message:
"An error occured while opening the database."

When I try to start the application under Windows 2000, the application doesn't start, but if I look in the "Task manager" the application is listed.

When I run GDS 2000, I receive the following message: "Your evaluation period is finished." "To continue to use GDS 2000, you must buy one or more licences now."

When I select a drop-down list and then I use the mouse wheel, GDS 2000 freezes.

When I print a report on service calls, some service calls are not printed.

When I run GDS 2000, I get the following message: "Insufficient memory..."

When using "GDS 2000" in network environment, I have to quit and restart the software in order to see modifications done by other users.

When I run GDS 2000, I get the following message: "An error occured while opening the database."

When I type a licence number in the licences manager, I get the error message "This licence number is not valid".

The display is incorrect on the screen.