diff --git a/TroubleShooting-&-FAQs.md b/TroubleShooting-&-FAQs.md
index 63b7ca9..a360a5b 100644
--- a/TroubleShooting-&-FAQs.md
+++ b/TroubleShooting-&-FAQs.md
@@ -18,3 +18,6 @@ PhyloToL is not a commercial package, and so it is on each researcher to investi
 > * for Part 2, each sequence name should end with a 10 digit code for each gene family (e.g. OG6_123456)
 > * example: >Op_me_Hsap_HP067328_OG6_124578
 
+## What should I look for if I get no output from PTL6p2?
+* Check your folder structure, input files, and the scripts. Also make sure to delete the output folder from the previous run.
+