#TN010

 #Summary

A. Charts draw slowly
B. There are strange looking shapes on the screen that are obviously not part of the chart
C. System throws an exception or operating system crashes when running seaPro (on start up,folio creation or drawing a chart)
D. Menu or other options do not work correctly
E. The chart keeps locking up, when you try to zoom or pan.
     The chart does not appear to look correct, area that should be filled are not

 #Problem caused by

1. A problem with your Graphic card driver; this is  very common with new graphics cards.
2. You have a very large data  overlay being displayed - so the chart takes a long time to redraw

 #Solution.

1. Graphics card driver 
Note: Vista/Windows 7 normaly don't have this option - the driver is automaticaly restated. Update the driver

It is very common for graphic card manufacturers to supply cards before the software drivers are fully completed or tested.
The problem is so common that Microsoft has a special settings option to overcome the problem !
For XP and 2000 (other operating systems are similar)

1. Select “Settings” from the Windows start button menu.
2. Open Control panel, and select “Display”.
3. From the top tabs on this window, select “Settings” and then the Advanced.  button,
4. Select the troubleshoot ( possibly has a different name) tab
5. This will display a “Hardware accelerator” slider bar, move this fully to the left (No acceleration)., Press apply,
6. Close the window, (and reboot the computer if  prompted). If the display now works, you will then need to
   contact your computer/graphics card supplier for an update to the graphics driver. You can try other acceleration settings to see if
   these work (one notch to the right from Maximum usually works), but the real solution is to update the driver.

 Note: If the problem persists with no acceleration, it can still be a graphics driver  problem and you should try to download an 
up to date graphics driver.

Sometimes changing color depth or resolution can help if the above does not solve the problem

 2. Select/create a new overlay.
Use  Chart menu , then Overlay toolbar or check the Databases selected (Chart menu)

3. Check logs
Check own or fishing logs - create a new one or reset current on (log menu)
Check AIS position log file, this can get large very quickly in busy areas. Try setting an automatically creation of a new log every 24 hours.
AIS toolbar settings then Logs.