Hi, I'm trying to generate Garmin maps files from Polish maps generated by GroundTruth. I get the following exception (using the latest version of mkgmap): SEVERE (PolishMapDataSource): error decoding label java.nio.charset.UnmappableCharacterException: Input length = 1 at java.nio.charset.CoderResult.throwException(Unknown Source) at java.nio.charset.CharsetDecoder.decode(Unknown Source) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.recode(PolishMapDataSource.java:535) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.isCommonValue(PolishMapDataSource.java:442) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.processLine(PolishMapDataSource.java:287) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.load(PolishMapDataSource.java:127) at uk.me.parabola.mkgmap.main.MapMaker.loadFromFile(MapMaker.java:148) at uk.me.parabola.mkgmap.main.MapMaker.makeMap(MapMaker.java:56) SEVERE (PolishMapDataSource): error decoding label java.nio.charset.UnmappableCharacterException: Input length = 1 at java.nio.charset.CoderResult.throwException(Unknown Source) at java.nio.charset.CharsetDecoder.decode(Unknown Source) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.recode(PolishMapDataSource.java:535) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.isCommonValue(PolishMapDataSource.java:442) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.processLine(PolishMapDataSource.java:287) at uk.me.parabola.mkgmap.reader.polish.PolishMapDataSource.load(PolishMapDataSource.java:127) at uk.me.parabola.mkgmap.main.MapMaker.loadFromFile(MapMaker.java:148) at uk.me.parabola.mkgmap.main.MapMaker.makeMap(MapMaker.java:56) The same MP file works in cgpsmapper without problems. It's quite large (47 MB) so I'm not able to detect which label is the culprit for the exception. Is there any way to see which line of the MP file causes the problem? Thanks, Igor