Renjin: error: no internal function "cov"

[amani]

Hello,

I am working on a java project where I am running a script in R and returning results to Java. I am using the Renjin interpreter with the following maven dependencies:

<dependency>
    <groupId>org.rosuda.REngine</groupId>
    <artifactId>REngine</artifactId>
    <version>2.1.0</version>
</dependency>

<dependency>
    <groupId>org.renjin</groupId>
    <artifactId>renjin-tests</artifactId>
    <version>0.8.2242</version>
</dependency>
<dependency>
    <groupId>org.renjin.cran</groupId>
    <artifactId>plm</artifactId>
    <version>1.4-0-b39</version>
</dependency>

<repository>
     <id>bedatadriven</id>
     <name>bedatadriven public repo</name>
     <url>https://nexus.bedatadriven.com/content/groups/public/</url>
</repository>

The process works just fine for a script with an "lm" function, but throws an error (in eclipse console) when using "plm".
The error is:

Error : no internal function "cov"
Loading required package: Formula
Loading required package: stats
Loading required package: stats
[1] "Error : no internal function \"cov\"\n"
attr(,"class")
[1] "try-error"
attr(,"condition")
$message
[1] "no internal function \"cov\""

attr(,"class")
[1] "simpleError" "error"       "condition"

any help with this is much appreciated!

Thank you!