diff --git a/R/httpget_package_file.R b/R/httpget_package_file.R
index 91c67bc0..d39467af 100644
--- a/R/httpget_package_file.R
+++ b/R/httpget_package_file.R
@@ -5,8 +5,11 @@ httpget_package_file <- function(pkgpath, requri){
     reqlib <- dirname(pkgpath);
     
     #try to load package from reqlib, but otherwise other paths are OK
-    .libPaths(c(reqlib, .libPaths()));
-    library(reqpackage, character.only=TRUE)    
+    inlib(reqlib,{
+      library(reqpackage, character.only=TRUE);
+      httpget_file(file.path(pkgpath, paste(requri, collapse="/")));       
+    });
+  } else {
+    httpget_file(file.path(pkgpath, paste(requri, collapse="/"))); 
   }
-  httpget_file(file.path(pkgpath, paste(requri, collapse="/"))); 
 }
diff --git a/R/httpget_package_r.R b/R/httpget_package_r.R
index ecf5b066..837a3f82 100644
--- a/R/httpget_package_r.R
+++ b/R/httpget_package_r.R
@@ -4,27 +4,27 @@ httpget_package_r <- function(pkgpath, requri){
   reqpackage <- basename(pkgpath);
   reqlib <- dirname(pkgpath);
   
-  #try to load package from reqlib, but otherwise other paths are OK
-  #Use .libPaths because we want to save the library path after evaluation.
-  .libPaths(c(reqlib, .libPaths()));
-  library(reqpackage, character.only=TRUE)
-  
-  #reqhead is function/object name
-  reqobject <- head(requri, 1);
-  reqformat <- requri[2];    
-  
-  if(!length(reqobject)){
-    res$checkmethod();
-    res$sendlist(ls(paste("package", reqpackage, sep=":")));
-  }
-  
-  #Get object. Throws error if object does not exist.
-  myobject <- get(reqobject, paste("package", reqpackage, sep=":"), inherits=FALSE);
-  
-  #return object
-  switch(req$method(),
-    "GET" = httpget_object(myobject, reqformat, reqobject),
-    "POST" = execute_function(myobject, tail(requri, -1), reqobject),
-    stop("invalid method")
-  );
+  #Package has to be loaded from reqlib, but dependencies might be loaded from global libs.
+  inlib(reqlib,{
+    library(reqpackage, lib.loc=reqlib, character.only=TRUE);
+    
+    #reqhead is function/object name
+    reqobject <- head(requri, 1);
+    reqformat <- requri[2];    
+    
+    if(!length(reqobject)){
+      res$checkmethod();
+      res$sendlist(ls(paste("package", reqpackage, sep=":")));
+    }
+    
+    #Get object. Throws error if object does not exist.
+    myobject <- get(reqobject, paste("package", reqpackage, sep=":"), inherits=FALSE);
+    
+    #return object
+    switch(req$method(),
+      "GET" = httpget_object(myobject, reqformat, reqobject),
+      "POST" = execute_function(myobject, tail(requri, -1), reqobject),
+      stop("invalid method")
+    );
+  });
 }
diff --git a/R/httpget_session_graphics.R b/R/httpget_session_graphics.R
index ae51f3cd..0f3d28fe 100644
--- a/R/httpget_session_graphics.R
+++ b/R/httpget_session_graphics.R
@@ -7,21 +7,25 @@ httpget_session_graphics <- function(filepath, requri){
   #try to use old libraries
   libfile <- file.path(filepath, ".Rlibs");
   if(file.exists(libfile)){
-    .libPaths(readRDS(libfile));
-  }     
-  
-  #graphics packages sometimes need to be reloaded
-  infofile <- file.path(filepath, ".RInfo");
-  if(file.exists(infofile)){
-    myinfo <- readRDS(infofile);
-    allpackages <- c(names(myinfo$otherPkgs), names(myinfo$loadedOnly));
-    if("ggplot2" %in% allpackages){
-      getNamespace("ggplot2");
+    customlib <- readRDS(libfile);
+  } else {
+    customlib <- NULL;
+  }        
+
+  #graphics packages sometimes need to be reloaded  
+  inlib(customlib, {  
+    infofile <- file.path(filepath, ".RInfo");
+    if(file.exists(infofile)){
+      myinfo <- readRDS(infofile);
+      allpackages <- c(names(myinfo$otherPkgs), names(myinfo$loadedOnly));
+      if("ggplot2" %in% allpackages){
+        getNamespace("ggplot2");
+      }
+      if("lattice" %in% allpackages){
+        getNamespace("lattice");
+      }    
     }
-    if("lattice" %in% allpackages){
-      getNamespace("lattice");
-    }    
-  }   
+  });
   
   #load data
   myeval <- readRDS(sessionfile <- file.path(filepath, ".REval"));
diff --git a/R/httpget_session_r.R b/R/httpget_session_r.R
index 6e696b65..1a2ad89d 100644
--- a/R/httpget_session_r.R
+++ b/R/httpget_session_r.R
@@ -7,14 +7,18 @@ httpget_session_r <- function(filepath, requri){
   #try to use old libraries
   libfile <- file.path(filepath, ".Rlibs");
   if(file.exists(libfile)){
-    .libPaths(readRDS(libfile));
+    customlib <- readRDS(libfile);
+  } else {
+    customlib <- NULL;
   }   
   
   #reload packages
-  infofile <- file.path(filepath, ".RInfo");
-  if(file.exists(infofile)){
-    loadsessioninfo(infofile);
-  }   
+  inlib(customlib, {
+    infofile <- file.path(filepath, ".RInfo");
+    if(file.exists(infofile)){
+      loadsessioninfo(infofile);
+    }   
+  });
   
   #load session
   sessionenv <- new.env();
diff --git a/R/httpget_user_library.R b/R/httpget_user_library.R
index 688f9ca9..26d6e30b 100644
--- a/R/httpget_user_library.R
+++ b/R/httpget_user_library.R
@@ -1,8 +1,9 @@
 httpget_user_library <- function(username, requri){
   #append user home library to path
   homelib <- userlibpath(username);
-  .libPaths(homelib);
-  
-  #load package from homelib (dependencies can still be loaded from site library)
-  httpget_library(homelib, requri);
+
+  #load package from homelib (dependencies can still be loaded from site library)  
+  inlib(homelib, {
+    httpget_library(homelib, requri);
+  });
 }
diff --git a/R/onLoad.R b/R/onLoad.R
index 7482bd65..c9740744 100644
--- a/R/onLoad.R
+++ b/R/onLoad.R
@@ -35,11 +35,6 @@ packagename = "";
   
   if(.Platform$OS.type != "windows"){
     Sys.setlocale(category='LC_ALL', 'en_US.UTF-8');
-  
-    #add non-system opencpu libraries
-    if(length(config("libpaths")) > 0){
-      .libPaths(unlist(config("libpaths")));
-    } 
   }
   
   #preload libraries
diff --git a/inst/config/defaults.conf b/inst/config/defaults.conf
index 47b43c46..6071214d 100644
--- a/inst/config/defaults.conf
+++ b/inst/config/defaults.conf
@@ -14,6 +14,5 @@
 	"appspaths" : "/usr/local/lib/opencpu/apps-library",
 	"repos" : "http://cran.rstudio.com",
 	"tmpdir" : "/tmp",
-	"libpaths" : [],
 	"preload" : []
 }