What Are the MAIN PROBLEMS with Wholesalers?

[Andre Vaughn]

I recently got my first property under contract in the St. Louis, MO. market (Florissant, MO. to be exact).  I do not have a buyers list but yet I have managed to make some great connections regarding my area where i intend to market.  Though i know and understand that we all make mistakes especially as newbies, I am one that strives to do things the proper way to avoid the common mistakes.  My question to the experience wholesalers and cash buyers is What are some problems and pitfalls that you have experienced dealing with wholesalers and how did you avoid or correct those issues?  Thanks!