AB version 4.91.0 introduced several new reserved words for AFL. From the release notes:
1. If your formula uses the following names: switch, case, break, continue, default as user-defined variable identifier then you would need to rename them. To do so follow the instructions in this article:
http://www.amibroker.com/kb/2007/04...ossible-conflict-with-user-defined-variables/.
The new reserved word: DEFAULT appears in several KP indicators for AB. These indicators will now produce an error message - Error 30: Syntax error when you try to drag and drop or insert these indicators onto a chart pane. The KP indicators that cause this error are as follows:
1. TSKPFast1
2. TSKPMedium
3. TSKPMrHugger
4. TSKPScoreCard
5. TSKPShortTermTradeBias
6. TSKPTrendBias
7. TSKPUniversalBond
8. TSKPVolSpikes
THE ABV LINK SHOULD SOLVE YOUR PROBLEM