There are a few reasons this could happen; since you haven't reported any log information from your YAAC.out log file (which contains a record of error messages from YAAC), I'm going to have to guess.
1. You have made a major upgrade of YAAC (several build numbers) since the last time you downloaded your map data, such that there was an incompatible change in the map data structure that is causing the failure. Download fresh map data (that would have been imported with the newer structure) to fix the problem. Or, conversely, you have downloaded new map data into a very old version of YAAC; in that case, upgrade YAAC to the latest build.
2. You have a very slow computer and are in an area with extremely dense map data, so it takes noticeable time to re-render and you're simply not waiting long enough. For example, although the map tiles for Antartica are only a few kilobytes, the map tiles for London, England (the home of the OpenStreetMap Foundation) are over 50 megabytes per tile.
3. There is an occasional race condition in the map renderer where it aborts the render due to a code collision. I have not been able to replicate this in order to determine how to fix it. Try moving the map just a little and see if it re-renders successfully.
Hope this helps.
Andrew, KA2DDO
author of YAAC
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Sent: Saturday, October 8, 2022 10:16 PM
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[email protected]Subject: [yaac-users] Map disappears when drag the map ?
When I drag the map, the map view disappears and becomes a grey background image, but heard stations can still be displayed. What is the reason?
