# 8.90 Maintenance Release  7

Bug fixes in this version are as follows

<table><thead><tr><th width="108">Tech Ref</th><th width="508">Description</th><th width="191">Fixed In</th></tr></thead><tbody><tr><td>138845</td><td>Documentation missing critical step in “4.3 Upgrading Controllers to vCRx.xx via USB Flash Drive” in 8.70+</td><td>Documentation</td></tr><tr><td>144668</td><td>A lack of locking could lead to a crash or data inconsistency during database read.</td><td>Server</td></tr><tr><td>148008</td><td>Crash in IsEventOrAlarmVisible due to deleted COPCEventServer</td><td>Server</td></tr><tr><td>149620</td><td>Deadlock issue in stored procedure, potentially causing system hangs.</td><td>Server</td></tr><tr><td>150168</td><td>Unable to Email Report. Make sure your preferred email is installed and configured as the default email program</td><td>Client</td></tr><tr><td>150216</td><td>Service restart results in retrying pending change sets starting again from the beginning</td><td>Server</td></tr><tr><td>151390</td><td>FK_SitePlan_ExtendedFenceVoltage_SiteItem constraint violation in multiserver</td><td>Server</td></tr><tr><td>152143</td><td>Universal Card Format - missing server-side range checks on most fields</td><td>Server</td></tr></tbody></table>

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