proguard.ParseException: Unknown option '-encryptstrings' in proguard.cfg
<p>When I run mvn install goal with progurad option then am getting the following error. Previously, I don't have this error. I could not find what has made the difference in getting the following error:</p>

<pre><code> proguard.ParseException: Unknown option '-encryptstrings' in line .. of file 'proguard.cfg'
</code></pre>

<p><strong>I am using dexguard for my project. is this error because of the maven could not identify the dexguard folder location?</strong></p>

<p>proguard.cfg content:</p>

<pre><code>-dalvik  -- unknown option
-android -- unknown option
# Encrypt all strings  -- parse exception
-encryptstrings '???*'
</code></pre>

The following works with out issues:

<pre><code>-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic
-optimizationpasses 30
-allowaccessmodification
-dontpreverify
-dontoptimize
-ignorewarnings
-renamesourcefileattribute Maviance
-keepattributes SourceFile,LineNumberTable,*Annotation*
-keep,allowshrinking,allowobfuscation class android.support.**Compat* { *; }
</code></pre>