Most Recent UPDATE
My aim is to compile a list of juice and flavorings that 
may cause problems as far as cracking 
polycarbonate tanks. Anything listed here 
may cause your 
polycarbonate tank to crack. 
I am primarily focused on the polycarbonate tanks, although this info may apply to other tanks.  
I am certainly not attempting to ban any flavors or ejuices.  I'm just trying to help out some folks who continue use polycarbonate tank systems.  
 ***Most, if not all, polycarbonate plastic by nature uses BPA in its manufacturing  You can read about BPA leaching from plastics.  Just google BPA.  IMHO, it's just another good reason to move away from polycarbonate material.  
 
Polypropylene is my personal choice for tank tubing because it it inexpensive and durable.  This is the same material that is used to make syringes. Polypropylene tubing can be purchased here: 
McMaster-Carr.  You can use 5/8"id x 3/4od for Liquinator tanks, Lil mama tanks, Big daddy tanks, Jtanks, and others.  This tubing has a very slight curve to it, but will not be noticeable when cut to a short length.  You can see a pic of a tank I made using this tubing with Liquinator endcaps here: 
http://www.e-cigarette-forum.com/forum/tank-mods/259319-heres-pic-my-polypropylene-tank.html
The popular DCTanks can now be found made from polypropylene tubing.  Polypropylene will not crack from a chemical reaction from using juices on this list.    For some reason, most vendors are not stating the fact that these are made from polypropylene.  IMO this is an excellent selling point that they are missing...  These tanks can be used with some XL cartos, or they can be easily cut down to fit a standard sized carto, my personal preference, since I have a few dozen tanks, and I can't afford the pricier ones.
Glass tanks are also a wonderful alternative.
I am personally not familiar with the Vision Stardust type tanks.  From what I hear, they are polycarbonate and folks seem to be having the same issues with cracking/frosting.  I am also not familiar persoanally with Vivi Nova's, since I have found my happy place with polypropylene DCTanks.
 
All of the ejuice/flavors listed below have been reported by an ecf member to cause problems for them.  YMMV.
 
Some of these are premixed juices, some are flavorings that DIY'ers use. Contributions have been made by myself and other members. So far we have:
 
Here is the list so far.  
Everything listed here has caused someone a problem with a polycarbonate tank.  Some have reported no issues whatsoever with some of these juices/flavorings.  Use at your own risk with polycarbonate tanks.  
 
 Alien Vision CravelopeAlien Vision Pineapple Pulp
 Cinnamon like "atomic cinnamon" types, not warm cinnamon like cinnamon coffee cake, this is okay
 Citrus acid
 Clove oil
 Cola(because of cinnamon)?
 Decadent Vapors Bubblegum
 Dekang Pina Colada/Tobacco mixed
 DIY Flavorshack Tangerine
 DIY Gummibear(melted plastic endcaps on DCTank).
 E liquids that contain triacetin, used in vg liquids to carry flavor more effectively
 Ecblends Apple Pie
 Ecblends Banana
 Ecblends Cinnamon Apple
 ECBlends Gingerbread, double flavor
 ECBlends Grape
 ECBlends Rootbeer
 Ectoplasm
 Elixirliquids Cinnamon Death
 Elixirliquids Deathday Cake
 Elixirliquids Gummibear
 Elixirliquids Heaven and Hell(cinnamon with menhtol)
 Elixirliquids Rage(hot cinnamon)
 FA Tiramisu
 Fuzion Vapor Gumby's Blood
 HellaVapor's Raspberry Winta-green.
 Honeysuckle
 Juicy Vapor Vanilla Cola
 KBV Hummingbird Nectar
 Lorann Butter Rum flavor
 Lorann Butterscotch
 Lorann Peppermint oil
 Mad Murdock's Radiator Pluid
 MadVapes Black Licorice
 Malic acid
 Mimosa(because of the orange)
 Mountain Oak Vapors Red Drop
 Mrs. T's Kickin' Pineapple Mrs. T's Snickerdoodle
 Mrs. T's Strawberry Lemonade
 Mrs. T's Strawberry Shortcake
 Mt. Baker Vapor Arnold Palmer
 Mt. Dew flavoring
 Mt. Vapor's Lemonade(endcaps melted)
 My Vape Store Cinnabun
 Neon Vapors neon Cherry
 Nutmeg
 Oil based/e liquid that conains essential oils, when mixed with.pg/vg, creates esters which will crack plastics
 Rawrvapor AuRaWRa
 Rawrvapor Banapple
 Rawrvapor Hawaii Sunrise
 Rawrvapor Strapple
 Sassafras
 Sour flavors
 Tasty Vapor Atomic Cinnicide
 Tasty Vapor Cherry Cola
 Tasty Vapor Sherbet
 Timmy's Double Double from Juicy Clear
 TPA Blueberry Candy(melted plastic endcaps on DCTank)
 TPA Blueberry(melted plastic endcaps on DCTank)
 TPA Cherry Blossom flavoring
 TPA Cinnamon Danish flavoring
 TPA Earl Gray Tea flavoring
 TPA Honeysuckle flavoring
 TPA Lemon Lime flavoring
 TPA Maraschino Cherry flavoring
 TPA Pineapple flavoring
 TPA Ripe Banana flavoring
 TPA Rootbeer Flavoring
 TPA RY4 Double Flavoring
 TPA Spearmint flavoring
 TPA Vanilla Bean Ice Cream flavoring
 TPA Vanilla Custard flavoring
 V2Cig's Menthol
 V4L WOW Peppermint Nobacco
 VAL Goddess
 Vapalicious Gooey Butter Cake.
 Vape Dude's Lemonade
 VaporGod Spearmint
 Vapor Renu Mt. Dew Baha Blast and Strawberry Limeade
 Vapor Renu Teaberry, Cherry Vanilla (possibly most of their flavors)
 Vaporbomb Fire 'n Ice(cracked tank, melted rubber drip tip)
 Vaporbomb Green Apple
 Vaporbomb Hot Cinnamon Candy
 Vaporbomb Sun Kissed
 Vaporbomb Sweet Cherry
 Vaporbomb Sweet Cinnamon Red Hots
 Vaporgod Licorice
 Vapor Room Cinnamon Red Hots
 Virgin Vapor Luscious Lime
 Virgin Vapor Sweet Summer Lemonade
 Vixen Vapor RH Candy Cane
 Vixen Vapor Rootbeer
 Wintergreen juice or flavoring
 Ziquid Zenthol 
 
Perfumer's Apprentice lists triactetin as in ingredient in some of their flavors, so be sure to check that out.  Triacetin has caused problems for many members.
 
Disclaimer: These are not "bad" juices. They just have the 
potential to cause cracking in tank systems using 
polycarbonate tubing.
Thanks to ECF Veteran member Stosh for alphabetizing it for me.   