Hello SNAP team. Sorry if I enter with my problem out of discussion.
I try open S2 l1c product with snap 3.0 (WIN7 x 64) S2A_OPER_MTD_SAFL1C_PDMC_20150818T101204_R022_V20150813T102406_20150813T102406.xml
And after import operation when I try see any band I get next exeption
PS Also I failed open just one source image in JP2 format that lies in GRANULE subdirectory of the product (with the same error)
PS2 I downloaded SNAP 2.0.2 - and problem was solved. Please inform if it is some bug in new version or it may be some problem with other WIN7 software inconsistancy on my computer.