Clover fails to generate HTML report for more than one project in Eclipse

Clover Version 4.0.3, built on January 27 2015 (build-dev)
Loaded from: D:\Soft\Eclipse\eclipse-4.4-luna\plugins\com.atlassian.clover.eclipse.core_4.0.3.v20150127120908-dev.jar
Clover: Developer License registered to Atlassian.
[C:/Users/Marek/.workspace-eclipse-4.4/Moneybags/.clover/coverage.db, 0 seconds"C:/Users/Marek/.workspace-eclipse-4.4/javasyntax18/.clover/coverage.db, 0 seconds--report, --testsIncludePattern, C:/Users/Marek/.workspace-eclipse-4.4/Moneybags/**/*Test.java, C:/Users/Marek/.workspace-eclipse-4.4/Moneybags/**/Test*.java, C:/Users/Marek/.workspace-eclipse-4.4/javasyntax18/**/*Test.java, C:/Users/Marek/.workspace-eclipse-4.4/javasyntax18/**/Test*.java--testsExcludePattern, C:/Users/Marek/.workspace-eclipse-4.4/Moneybags/, C:/Users/Marek/.workspace-eclipse-4.4/javasyntax18/, -a, -i, C:\Users\Marek\AppData\Local\Temp\clover3525180172645953949merge, -o, C:\Users\Marek\Desktop, -t, Coverage Report, -tc, 0, -f, , -s, 0 days]
Error generating report: java.lang.NumberFormatException
java.lang.NumberFormatException
	at java.math.BigDecimal.<init>(BigDecimal.java:459)
	at java.math.BigDecimal.<init>(BigDecimal.java:728)
	at com.atlassian.clover.cfg.Interval.initialise(Interval.java:183)
	at com.atlassian.clover.cfg.Interval.<init>(Interval.java:121)
	at com.atlassian.clover.eclipse.core.reports.MergeReportJob$MergeAndReport.run(MergeReportJob.java:140)
	at com.atlassian.clover.eclipse.core.reports.ForkingReporter.main(ForkingReporter.java:25)