Problem running ModelSim

Hello, I have just install Ubuntu 14.04 64 bit in my computer and I have install Quartus 2. It works well but I canꞌt use ModelSim, I recieve an error that says:

Error: Can't launch ModelSim-Altera Simulation software -- make sure the software is properly installed and the environment variable LM_LICENSE_FILE or MGLS_LICENSE_FILE points to the correct license file. Check the NativeLink log file

And the content of this file is:

Info: Start Nativelink Simulation process

Info: NativeLink has detected Verilog design -- Verilog simulation models will be used

========= EDA Simulation Settings =====================

Sim Mode : RTL

Family : cycloneii

Quartus root : /home/juan/altera/13.0sp1/quartus/linux/

Quartus sim root : /home/juan/altera/13.0sp1/quartus/eda/sim_lib

Simulation Tool : modelsim-altera

Simulation Language : verilog

Simulation Mode : GUI

Sim Output File :

Sim SDF file :

Sim dir : simulation/modelsim

=======================================================

Info: Starting NativeLink simulation with ModelSim-Altera software

Sourced NativeLink script /home/juan/altera/13.0sp1/quartus/common/tcl/internal/nativelink/modelsim.tcl

Error: Can't launch ModelSim-Altera Simulation software -- make sure the software is properly installed and the environment variable LM_LICENSE_FILE or MGLS_LICENSE_FILE points to the correct license file.

Error: NativeLink simulation flow was NOT successful

================The following additional information is provided to help identify the cause of error while running nativelink scripts=================

Nativelink TCL script failed with errorCode: issued_nl_message

Nativelink TCL script failed with errorInfo: Can't launch ModelSim-Altera Simulation software -- make sure the software is properly installed and the environment variable LM_LICENSE_FILE or MGLS_LICENSE_FILE points to the correct license file.

while executing

"error "$emsg" "" "issued_nl_message""

invoked from within

"if [ catch {exec $vsim_cmd -version} version_str] {

set emsg "Can't launch $tool Simulation software -- make sure the software is properly installed..."

(procedure "launch_sim" line 89)

invoked from within

"launch_sim launch_args_hash"

("eval" body line 1)

invoked from within

"eval launch_sim launch_args_hash"

invoked from within

"if [ info exists ::errorCode ] {

set savedCode $::errorCode

set savedInfo $::errorInfo

error $result $savedInfo $savedCode

} else {

..."

invoked from within

"if [catch {eval launch_sim launch_args_hash} result ] {

set status 1

if [ info exists ::errorCode ] {

set savedCode $::errorCode

set sav..."

(procedure "run_sim" line 78)

invoked from within

"run_sim run_sim_args_hash"

invoked from within

"if [ info exists ::errorCode ] {

set savedCode $::errorCode

set savedInfo $::errorInfo

error "$result" $savedInfo $savedCode

} else {

er..."

(procedure "run_eda_simulation_tool" line 330)

invoked from within

"run_eda_simulation_tool eda_opts_hash"

I'm new using Quartus in ubuntu so I'm a little lost, I would be grateful if you can help me. I've been looking for solutions on google and but I have not found a lot. I found something about removing the .altera folder but it doesn't work for me. Thank you.