Have there been any issues there ?
Not that I am aware of. This change did occur in Clonedvd 2.9.1.2 though:
Version 2.9.1.2: 2007 08 09
- Fix: Discs created with CloneDVD did not play on some DVD player models
You could try Clonedvd 2.9.1.1 to see if that fixes your issue. If not, then my original reply in this thread applies.
1. What model/brand standalone dvd player are you using?
2. What blank media are you using? Specify a) brand name b)type (-R, +R, -RW, +RW, RAM, DL, etc.) c)media code, d) capacity/size, e) batch codes/serial codes (often found printed on the inner plastic hub of the blank disc), and f)country (factory information would be great as well, if possible) where the media was made (look on the physical packaging; do not rely on programs to accurately give you this information).
If you don't know how to obtain media codes, you may find the following programs useful:
http://dvd.identifier.cdfreaks.com and
http://www.dvdinfopro.com/
And you do need to realize that most blank media that is sold under certain brand names isn't made by that company. Different brand names can change manufacturers and sources. Moreover, disc quality varies more frequently with lower quality blank media. So some discs in a spindle may work while the others may fail.
Bad quality blank media can vary in results from disc to disc, even within the same spindle. With good blank media you can play "find the bad blank" game. With inferior quality blank media you get to play "find the blank that works" game. And even when inferior blank media does work, you can play the "will my backups still play after 6 months (or even after two years)" game.
Use good quality blank media (Taiyo Yuden Premium, Verbatim, Maxell Plus, Maxell Broadcast Quality). Avoid Ritek, Memorex, Regular Maxell blank media that you can find in most stores that are not made in Japan, Fuji, TDK from Costco, and Princo. Also, on average, it's wise to avoid blank media that's made in China or Hong Kong.
Everything I wrote previously may still apply.