QuickBooks QBXML API Error: Failed to get an Interface ptr: Source: .\src\TimeActFilter.cpp

QuickBooks QBXML API Error: Failed to get an Interface ptr: Source:
.\src\TimeActFilter.cpp

My clients stumbled upon an issue when attempting to make a
straightforward TimeTracking query utilizing two tools: OpenSync and
QODBC. They both present the same error in the qbsdklog.txt files. Have
any QBXML developers experienced this / devised a remedy? Intuit general
support has told them the fault lies with the 3rd party developers however
I'm not sure how they came to such a conclusion.
QODBC:
20130913.095701 I 2588 QBSDKProcessRequest Application named
'FLEXquarters QODBC' starting requests (process 6920).
20130913.095701 I 2588 SpecVersion Current version of qbXML in use: 10.0
20130913.095701 I 2588 QBSDKMsgSetHandler QUERY: Time Tracking
20130913.095701 I 2588 TimeTrackingStorage::DoQuery Setting
iterator chunk size to 00001000
20130913.100310 E 2588 TimeTrackingStorage::DoQuery Failed to get
an Interface ptr: Source: .\src\TimeActFilter.cpp line #86
HRESULT=0x80004005
20130913.100310 I 2588 QBSDKMsgSetHandler Request 1 failed.
20130913.100310 I 2588 MsgSetHandler Finished.
OpenSync:
20130913.142336 I 2588 QBSDKProcessRequest Application named
'OpenSync' starting requests (process 700).
20130913.142336 I 2588 SpecVersion Current version of qbXML in use: 10.0
20130913.142336 I 2588 QBSDKMsgSetHandler QUERY: Time Tracking
20130913.142336 I 2588 TimeTrackingStorage::DoQuery Setting
iterator chunk size to 2147483647
20130913.142337 E 2588 TimeTrackingStorage::DoQuery Failed to get
an Interface ptr: Source: .\src\TimeActFilter.cpp line #86
HRESULT=0x80004005
20130913.142337 I 2588 QBSDKMsgSetHandler Request failed.
20130913.142337 I 2588 MsgSetHandler Finished.
Any information is appreciated