diff --git a/OriginFile.cpp b/OriginFile.cpp
index f6c41b4..bcdcccb 100644
--- a/OriginFile.cpp
+++ b/OriginFile.cpp
@@ -33,14 +33,15 @@
 #include <string>
 
 OriginFile::OriginFile(const string& fileName)
-:	fileVersion(0)
+:	fileVersion(0), ioError(0)
 {
 	ifstream file(fileName.c_str(), ios_base::binary);
 
 	if (!file.is_open())
 	{
-		cerr <<  "Could not open " << fileName.c_str() << "!" << endl;
-		exit(EXIT_FAILURE);
+		cerr << endl << "liborigin: " << strerror(errno) << ": " << fileName.c_str() << endl;
+		ioError = errno;
+		return;
 	}
 
 #ifdef GENERATE_CODE_FOR_LOG
@@ -48,8 +49,9 @@ OriginFile::OriginFile(const string& fileName)
 	logfile = fopen("./opjfile.log", "w");
 	if (logfile == nullptr)
 	{
-		cerr <<  "Could not open opjfile.log !" << endl;
-		exit(EXIT_FAILURE);
+		cerr << endl <<  "liborigin: " << strerror(errno) << ": opjfile.log" << endl;
+		ioError = errno;
+		return;
 	}
 #endif // GENERATE_CODE_FOR_LOG
 
@@ -152,10 +154,13 @@ OriginFile::OriginFile(const string& fileName)
 	fclose(logfile);
 #endif // GENERATE_CODE_FOR_LOG
 	parser.reset(createOriginAnyParser(fileName));
+	ioError=0;
 }
 
 bool OriginFile::parse()
 {
+	if (ioError != 0)
+		return false;
 	parser->buildVersion = buildVersion;
 	parser->fileVersion = fileVersion;
 	return parser->parse();
diff --git a/OriginFile.h b/OriginFile.h
index 80b6ff2..3a49395 100644
--- a/OriginFile.h
+++ b/OriginFile.h
@@ -70,7 +70,7 @@ public:
 	string resultsLogString() const;													//!< get Results Log
 
 private:
-	unsigned int fileVersion, buildVersion;
+	unsigned int fileVersion, buildVersion, ioError;
 	unique_ptr<OriginParser> parser;
 };
 
diff --git a/opj2dat.cpp b/opj2dat.cpp
index ff53309..230ac84 100644
--- a/opj2dat.cpp
+++ b/opj2dat.cpp
@@ -54,6 +54,8 @@ int main(int argc, char *argv[]) {
 	OriginFile opj(inputfile);
 	int status = opj.parse();
 	cout << "Parsing status = " << status << endl;
+	if (! status)
+		return -1;
 	cout << "OPJ PROJECT \"" << inputfile.c_str() << "\" VERSION = " <<  opj.version() << endl;
 
 	cout << "number of datasets     = " << opj.datasetCount() << endl;