I get the following error message, when installing norma:
mvn clean install
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for org.xml-cml:norma:jar:0.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for com.mycila.maven-license-plugin:maven-license-plugin is missing. @ line 92, column 12
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:cobertura-maven-plugin is missing. @ line 53, column 12
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building norma 0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ norma ---
[INFO] Deleting /Users/hildegaa/Documents/sra_upload/map_papers/norma/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ norma ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 46 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ norma ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 85 source files to /Users/hildegaa/Documents/sra_upload/map_papers/norma/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/pubstyle/getpapers/GetPapers.java:[14,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/html/HtmlCleaner.java:[8,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[22,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaTransformer.java:[28,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[269,42] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[315,17] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[347,17] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[354,57] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[375,17] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[445,16] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java:[25,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaTransformer.java:[82,17] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.NormaTransformer
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java:[171,38] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.util.TransformerWrapper
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[14,30] cannot find symbol
symbol: class CMDir
location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[36,17] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.input.pdf.PDF2XHTMLConverter
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[42,35] cannot find symbol
symbol: class CMDir
location: class org.xmlcml.norma.input.pdf.PDF2XHTMLConverter
[INFO] 16 errors
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.497 s
[INFO] Finished at: 2016-04-08T11:46:06+01:00
[INFO] Final Memory: 23M/316M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project norma: Compilation failure: Compilation failure:
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/pubstyle/getpapers/GetPapers.java:[14,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/html/HtmlCleaner.java:[8,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[22,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaTransformer.java:[28,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[269,42] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[315,17] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[347,17] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[354,57] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[375,17] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaArgProcessor.java:[445,16] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaArgProcessor
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java:[25,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/NormaTransformer.java:[82,17] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.NormaTransformer
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/util/TransformerWrapper.java:[171,38] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.util.TransformerWrapper
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[14,30] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: package org.xmlcml.cmine.files
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[36,17] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.input.pdf.PDF2XHTMLConverter
[ERROR] /Users/hildegaa/Documents/sra_upload/map_papers/norma/src/main/java/org/xmlcml/norma/input/pdf/PDF2XHTMLConverter.java:[42,35] cannot find symbol
[ERROR] symbol: class CMDir
[ERROR] location: class org.xmlcml.norma.input.pdf.PDF2XHTMLConverter
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException