loadIndexesFromZipFile() method extract folders as file, during the unzip process, this cause an access file error, because the directories will included into the array indexes.

[code]
File entryFile = new File(getIndexDirectoryPath(), entry.getName());
FileUtils.write(zipInputStream, entryFile, length);

if (SimpleIndexUtil.indexFileExists(entryFile))

{ tmp.add(new Index(entryFile.getAbsolutePath(), true)); }
[/code]

I tried this solution, it seems to work:

[code]
File entryFile = new File(getIndexDirectoryPath(), entry.getName());
if (entry.isDirectory()) { entryFile.mkdir(); } else { FileUtils.write(zipInputStream, entryFile, length); }

if (SimpleIndexUtil.indexFileExists(entryFile)) { tmp.add(new Index(entryFile.getAbsolutePath(), true)); }

[/code]

In this case the indexFileExist() excludes all the directories, form the array indexes.