If your 1Passwords stops working you need to modify the SupportedBrowsers.plist File.
This allows 1Password to work with this developer preview version of Safari.
This file is located within 1Password App itself so you need to do the following:
Right click 1Password and "Show Application Contents"
Go to:
Contents -> Resources -> SupportedBrowsers.plist
Open this file with TextEdit and copy and paste the following(replace all the text in this file):
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Camino</key>
<dict>
<key>ClassName</key>
<string>OPCaminoPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>2010</string>
<key>MinBundleVersion</key>
<string>1.0.1</string>
<key>PluginName</key>
<string>OnePasswdCamino</string>
<key>BundleIdentifier</key>
<string>org.mozilla.camino</string>
</dict>
<key>DEVONagent</key>
<dict>
<key>ClassName</key>
<string>OPDevonAgentPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>2.3.1</string>
<key>MinBundleVersion</key>
<string>2.0</string>
<key>PluginName</key>
<string>OnePasswdDEVONagent</string>
<key>BundleIdentifier</key>
<string>com.devon-technologies.agent</string>
</dict>
<key>NetNewsWire</key>
<dict>
<key>ClassName</key>
<string>OPNetNewsWirePlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>9999</string>
<key>MinBundleVersion</key>
<string>462</string>
<key>PluginName</key>
<string>OnePasswdNNW</string>
<key>BundleIdentifier</key>
<string>com.ranchero.NetNewsWire</string>
</dict>
<key>OmniWeb</key>
<dict>
<key>ClassName</key>
<string>OPOmniWebPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>623</string>
<key>MinBundleVersion</key>
<string>607.17</string>
<key>PluginName</key>
<string>OnePasswdOmniWeb</string>
<key>BundleIdentifier</key>
<string>com.omnigroup.OmniWeb5</string>
</dict>
<key>Safari</key>
<dict>
<key>ClassName</key>
<string>OPSafariPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>5528.16</string>
<key>MinBundleVersion</key>
<string>412</string>
<key>PluginName</key>
<string>OnePasswdSafari</string>
<key>BundleIdentifier</key>
<string>com.apple.Safari</string>
</dict>
<key>WebKit</key>
<dict>
<key>ClassName</key>
<string>OPSafariPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>23700</string>
<key>MinBundleVersion</key>
<string>0</string>
<key>PluginName</key>
<string>OnePasswdSafari</string>
<key>BundleIdentifier</key>
<string>org.webkit.nightly.WebKit</string>
</dict>
<key>Fluid</key>
<dict>
<key>ClassName</key>
<string>OPFluidPlugin</string>
<key>InternetPlugin</key>
<true/>
<key>MaxBundleVersion</key>
<string>0.9.1.3</string>
<key>MinBundleVersion</key>
<string>0.8</string>
<key>PluginName</key>
<string>OnePasswdFluid</string>
<key>BundleIdentifier</key>
<string>com.fluidapp.FluidInstance.</string>
</dict>
</dict>
</plist>