Thanks Jeff;
Unfortunately the results appear to remain the same:
Initializing I2C devices...
Testing device connections...
I2C (0x48) reading 1 words from 0x0.... Done (0 read).
ADS1115 connection failed
I2C (0x48) reading 1 words from 0x1.... Done (0 read).
0
I2C (0x48) reading 2 bytes from 0x1...85 83 . Done (2 read).
2
Lefty