Hello. I'm using Java 7 update 67 and I'm experiencing the same problem. Using Chrome.
OKM Community 6.3 build 8150 on Fedora... will install on CentOS this afternoon
This is part of the Java Console Debug:
Code: Select allsecurity: Trust for: http://okm01.nnnnnnn.com:8080/OpenKM/uploader.jar has ended: Wed Dec 31 18:00:00 CST 1969
security: Loaded certificates from Deployment session certificate store
security: Validate the certificate chain using CertPath API
security: The certificate has expired, need to check timestamping info
security: No timestamping info available
security: Loading Root CA certificates from C:\Program Files (x86)\Java\jre7\lib\security\cacerts
security: Loaded Root CA certificates from C:\Program Files (x86)\Java\jre7\lib\security\cacerts
security: Obtain certificate collection in Root CA certificate store
security: Loaded blacklisted.certs file: C:\Users\nnnnnnn\AppData\LocalLow\Sun\Java\Deployment\security\blacklisted.certs
security: Failing over to CRLs: Certificate does not specify OCSP responder
network: Cache entry not found [url: http://crl.thawte.com/ThawtePremiumServerCA.crl, version: null]
network: Connecting http://crl.thawte.com/ThawtePremiumServerCA.crl with proxy=DIRECT
network: Connecting http://crl.thawte.com:80/ with proxy=DIRECT
network: CleanupThread used 3 us
network: Downloading resource: http://crl.thawte.com/ThawtePremiumServerCA.crl
cache: Adding MemoryCache entry: http://crl.thawte.com/ThawtePremiumServerCA.crl
security: Certificate validation succeeded using OCSP/CRL
security: Saving certificates in Deployment session certificate store
security: Saved certificates in Deployment session certificate store
basic: Your security settings have blocked an application signed with an expired or not-yet-valid certificate from running
basic: Dialog type is not candidate for embedding